Demi Moore and Salma Hayek met up with Ashton Kutcher for shopping and lunch in Paris today following his early morning photo call for No Strings Attached. The movie is actually being called Sex Friends in France, though his pal and costar Natalie Portman appears to be staying in NYC and not participating in the latest round of promotional appearances. Their romantic comedy was a hit at the box office in the States, and he's hoping for more of the same with his next project New Year's Eve. Ashton has a packed work schedule, but he was still able to fit in some fun and celebrate his 33rd birthday on Monday — he enjoyed a night of sexy dancing with Demi while on vacation in Brazil recently, and was also able to attend the Super Bowl. Salma, meanwhile, did some partying of her own recently while off in St. Barts with her husband Francois.