Katherine popped in for a chat with London's Capital Radio recently as part of a week of promotion for the European release of her new action comedy "Killers".

Katherine Heigl, Rob Luketic & Kevin Hughes At Capital Radio Katherine, Rob Luketic & Kevin Hughes At Capital Radio

Speaking with showbiz reporter Kevin Hughes, she discussed working with Ashton Kutcher, meeting his wife Demi, singer Usher (who has a cameo role in the movie) and her love of karaoke. Be sure to listen out for Katherine's impersonation of Prince singing "I Wanna Be Your Lover" and how she managed to bruise her thighs during filming.