The Big Bang Theory and The Flight Attendant star Kaley Cuoco has shared an adorable family photo to celebrate her sister’s birthday.

The actress marked her sibling Briana Cuoco’s big day with a seriously cute Instagram post on November 29 that featured an old photo of the pair as kids. The two appeared to be standing alongside their mother, Layne Ann.

“Happy happy birthday to the best sister on planet earth!” she wrote in the caption accompanying the photo. “@bricuoco you are truly a magical human with so much to give.

“Everyone who knows you, adores you.. NOONE makes me laugh harder! You have been there for me through every high and every low and I promise i will do the same for you..I love you to the moon and back again! This is your year!”

Briana shared a similar sentiment in response, writing in the comments section: “I love you sister!!!”

The two actually celebrate their birthdays just a day apart (Kaley is three years older), so Briana returned the favour on her Instagram the next day when she shared a photo of the two as children and a snap showing them today.

hbd my beautiful, talented, generous, wonderful, hilarious sister!!” she wrote in the caption. “actually don’t know what i’d do in this life without us going through it together. i love you so very much.”

Like her sister, Briana is also an actress. She had a recurring role on The Flight Attendant, and plays Barbara Gordon/Batgirl on the Harley Quinn animated series. She also auditioned for The Voice in the fifth American season, and made it to the Knockouts round where she was eliminated.

Season 2 of The Flight Attendant is on the way, and you can find out everything you need to know about it right here.

Source: digitalspy.com

By Ivaylo Angelov

Ivaylo Angelov born in Bulgaria, Varna graduated School Geo Milev is Tvserieswelove's Soaps Editor and oversees all of the section's news, features, spoilers and interviews.