Claudia Ciesla celebrated her birthday with host Shah Rukh Khan on the sets of Zor Ka Jhatka at Yash Raj Studios on February 12.

When King Khan found out that it's Gulaabo's (as SRK refers to her!) big day, a cake was called for her and the superstar sang aloud for Claudia. She was touched by his gesture and feels this was her best birthday ever.