40th birthday wishes for sister can be very special.  There’s a big decade mark to celebrate, and it’s also the time when you’re all grown up now. Your life is rich, even though you’re in the middle of it. In this article we will give tips on how to make your sister’s 40th birthday special.

Happy 40th Birthday Wishes For Sister

1. I am so grateful to have you in my life! You’re a fantastic sister who is always there for me whenever I need you. I would not want it any other way. As you embark on your 40th year of life, I want to wish you the best! May you have many more happy years and health to fulfill all your dreams. Happy Birthday sis!
2. Sister, I can’t believe that you are turning 40! You have been one of the most important people in my life since the day we were born. You have stood by my side no matter what and even when we don’t agree you always make me take a look at things from a different perspective. I wish for you so many amazing things in life because you deserve to be happy after everything you’ve been through. I hope it’s an absolutely amazing.
3. You are the best sister I could have ever asked for. You lead with your heart and see right through me. Thank you for being my sounding board and the person I could trust most. I love you more than anything, as a sister, as a friend and as an honorary family member. You are in every way the best big sis anyone could ask for! Happy 40th birthday!
4. I can’t believe you are turning 40. We have been through so much together, laughing and crying, long talks, late nights and also a few sleepless nights. I am going to miss calling you my sister. You are now a wonderful woman with so many great characteristics. I can’t wait to see where the next 40 years take us! Love you, sis!
5. Age has nothing to do with how you feel or act. You are as lively as ever and I love that. I would treasure every moment we’ve had together and every moment to come. Happy 40th Birthday Sis!
6. Happy 40th Birthday Sis! You deserve to have a wonderful birthday. I hope your day is filled with everything you desire and wished for. Enjoy dinner in good company, gifts that are special, and friends who truly care. You are a great sister, friend, wife and mother. I am so glad you were born into this world!
7. Happy 40th Birthday to my big, beautiful sister! You are the best sister I could ever ask for. I am so proud to call you my sis. Thank you for always being there for me and making me smile. I am looking forward to many, many more years together as sisters. Love you!!!
8. I hope you had the best birthday! I just thought I’d send you a card to tell you how much fun we had celebrating with you. Hoping this year has been better than ever, still missing those good times. Thanks for always being there for me, Sis. Happy 40th Birthday Sis!
9. Happy 40th Birthday Sis! There doesn’t seem to be enough words to describe how awesome you are. You have been a great friend since grade school, and now as sisters. I hope you always stay in my life. Sending many more years of good health and happiness your way!
10. Happy 40th birthday! You’re a strong, confident and funny woman, who is still a great friend and sister. I hope that you have an unforgettable evening with all your family and friends.
11. You are more than a sister to me, you are my best friend. I love you more than anyone knows. We were never the closest when we were younger but I’m so glad we grow close again. Growing up, every time I’d get hurt or mad at the world you would be there for me, listening and making everything alright again. You are always looking out for me and that’s something that makes you special. Happy 40th birthday and I hope your day is
12. Happy 40th Birthday Sis! You are the best sister a girl could ever have. You will forever be my favorite person in the whole world. You are so nice, sweet and I am so glad to have you as a sister. I know we don’t see each other as much as we would like to, but we are here for each other whenever something is wrong or there is something we need to talk about. I love you so much and can’t wait to see you on your birthday!
13. Happy 40th birthday to the sweetest sister on the planet! May your day be filled with love and laughter filled moments, hugs and kisses and lots of sweet things, may your day be nothing but a bunch of juicy berries. Happy Birthday my precious little sister!
14. To my sister, happy 40th birthday. You are the most amazing sister in the world and I wouldn’t trade you for anything. You bring me so much joy and happiness that I can’t help but smile at every memory we have shared. I love you!
15. Happy 40th Birthday to my dearest sister. You mean the world to me. I hope you have a wonderful day full of fun and excitement. You are the best sister ever! I’m proud to call you my sister and friend. Have the best day ever!!!
16. Happy 40th Birthday Sis! You’re the most wonderful, loving and caring sister anyone could ask for. You can brighten my days with just one hug, and make me feel so special at the mere mention of your name. I hope your birthday is filled with happy memories of laughter, smiling faces and all of your closest friends and family around.
17. Happy 40th. I can’t believe you were born in the same decade as me! I remember so many years sitting on that couch watching TV, sliding down the stairs on a blanket, painting toenails and playing dress up. Best wishes for a very happy 4-0.
18. Happy 40th Birthday Sis! We have spent many days laughing, crying and just being there for each other. You have stood by me through all the good times and the bad. I am so thankful that you share this life with me. Love you Sis!
19. Happy 40th Birthday Sis! If there are 40 reasons to adore you, I have yet to discover them all. If love could be put into numbers, then I’d count one through forty, and then right back at the beginning and start all over again.
20. Happy 40th Birthday Sis! I’ll start by saying you’re kind of the silly one out of our family. I remember when we were growing up and mom told us to take our baths in the tub, but you always lowered yourself into the toilet and started singing, “I’m a little teapot, short and stout. Here is my handle, here is my spout!” Then naturally you had to show my Mom and your two brothers your “spout.
21. Happy 40th Birthday Sis! You are my sister, my best friend, and my shoulder to cry on. You are the one person that I can always go to through all things. And on your 40th birthday I want you to know how amazing you are. You deserve all the happiness in the world and enjoy each day because it’s yours to live!
22. Today I just want to wish my sister a happy 40th Birthday. I hope you have an amazing day and you know that no matter what I will always love you!
23. Birthdays are always a day for one to look back and a day for me to say-I love you. I couldn’t imagine my life without you and though the years have passed, your love has been a constant source of warmth for me. Our relationship is stronger than ever and as we enter our golden years together- I know no matter what, you will always be there for me. Happy 40th birthday sister! Love you always!
24. Happy 40th Birthday Sis! You have always been one of my closest friends since the very first day we met. I know it’s a big milestone because you are turning 40 but I think you deserve this and so much more! Even though I don’t like to think about it, you are actually getting older, but age hasn’t treated you too badly! I can’t wait to see what lies ahead for your 40th year…
25. You are such an amazing person. I am thankful to have you in my life. You are a great sister, awesome teacher and smiling face in my day. Happy 40th birthday and May God bless you with many more.
26. Happy 40th Birthday Sis! I’m so glad we are sisters, and that you are my big brother. I’m sending 40 years of love to you on your big day.
27. I am so lucky to have you as my sister. You are the definition of awesome! I don’t know what I would do without you in my life. You’re always there to lift me up, make me laugh, and always help me out of a jam. I could never thank you enough for all the ways you’ve helped me out over the years. No matter how much time goes on, you will always be the best sister I could have asked for. Happy 40th Birthday!
28. Happy 40th Birthday little sister… and “little” will always be the operative word, because no matter how old you are, I’ll still see you as my little sister. Here’s to four decades of living, loving and learning! Here’s to four decades of memories — good and bad — that we will continue to share and make new ones! We may be a few years apart in age, but there’s never been a gap big enough to keep us apart.
29. Today is the day we’ve all been waiting for, you become a little older. I’m not sure how you feel about this, but to me you are as beautiful as ever! You deserve the best of everything and here’s my gift for you: I wish you a peaceful life filled with joy and happiness. Happy 40th Birthday!
30. Happy 40th Birthday Sis! You are smart and funny, honest, strong and kind. You’re always willing to lend a hand. Maybe you’re not the best at cooking and cleaning but you do it anyway, because you love us so much. You have always been there for me and I hope I can be there for you when you turn forty on tomorrow.
31. Sis, some day you will really have to stop this birthday thing. This is your 40th and I find that completely unacceptable. Everyone says they’re fine with it, but secretly I know they all wish you were 15 again so you could be carded every time you buy a drink. Come on now, let’s be honest about this.
32. Dearest sister, as you turn another year older, I want to take a moment to reflect on how lucky I am to have you in my life. Happy 40th Birthday Sis!
33. My sister, it’s your 40th birthday and I want you to know that I’m so glad we’re family. You are my best friend and the most amazing woman I know. You have taught me so many lessons on life and I am so grateful. I cherish all the memories we have made together and feel very lucky to have you as a sister and person in general.
34. Well, sis, you are 40 today!! I hope this card does your 20s proud. I love you and always will. I met you a long time ago and was so impressed by who you were and the woman you would become. Your values, your sense of humor and the advice that you’ve given me a million times over. You are wise beyond words, my hero and my friend. Your sisterhood has meant more than anything to me.