It’s rare to find such a genuine friend in Tinseltown, so Taylor Swift knows not to take her bond with Selena Gomez for granted.

The “We Are Never Ever Getting Back Together” songstress took to her Twitter account to share her love and appreciation for her “Ramona & Beezus” buddy in honor of her 21st birthday.

Swifty tweeted, "Happy 21st birthday to my friend, and the closest thing I've ever had to a sister, @selenagomez!!"

Taylor also included a photo of herself with Gomez perched on a balcony above a beach, both doing a mermaid impression.