ET caught up with Sistine Stallone at the premiere of '47 Meters Down: Uncaged,' out Aug. 16. The up-and-coming actress and her famous father hit the red carpet together on Tuesday night.

Sylvester Stallone/Instagram Sylvester Stallone is proud to celebrate his daughter Sistine's 26th birthday! On Thursday, June 27, the Rocky star, 77, marked her special day by sharing photos of ...