Feb 13, 08 08:18 PM

Isla Fisher, Ryan Reynolds and Rachel Weisz were among the celebrities on the red carpet at the premiere of Definitely, Maybe at the Ziegfield Theater in New York last night.

In the film, due in US theaters on Valentine's Day, A political consultant, played by Reynolds, tries to explain his impending divorce and past relationships to his 11-year-old daughter (Abigail Breslin).