The couple were in the U.K. to promote the dramedy "Friends With Kids" earlier this month, when a thief swiped Westfeldt's hotel key card from her handbag and ransacked the pair's room.
A source tells Life & Style magazine, "They were dining at a restaurant and Jennifer's purse was snagged by someone. That person took the hotel key in Jennifer's purse, which had the hotel name on it, and robbed their room. They had to contact the police. It was horrible."