Jack Black didn't buy his 'Kung Fu Panda 2' co-star Angelina Jolie a birthday present.

The comedy actor has been busy travelling the world promoting the animated sequel with the actress but he forgot to get her something for her 36th birthday - which she celebrated on June 4.

Speaking at the film's UK premiere at the Westfield London shopping centre yesterday (05.06.11), Jack told BANG Showbiz: "I didn't get Angelina anything yesterday - but I could probably just make her a homemade card. I find cards are the best gifts. They're the most special.

"I really should have made her something, actually . maybe something origami? She would appreciate that."

Jack also revealed his two sons five-year-old Samuel and three-year-old Thomas - his children with wife Tanya Haden - are fans of his animated alter-ego Po, the kung-fu master panda, but don't have the attention spans to sit through either of the films.

He said: "They don't really have the attention span for a full-length feature, but they love the characters.

"They're back in Los Angeles today though - they can't deal with the jet-lag. To be honest, neither can I - the boys know daddy needs his beauty sleep!"

Other stars to attend the premiere included director Jennifer Yuh Nelson and former S Club 7 singer Rachel Stevens.