Michelle Williams has reportedly split from her boyfriend.

The 'My Week With Marilyn' actress and Dustin Yellin are said to have separated after a year of dating, Us Weekly reports.

The 33-year-old beauty - who has eight-year-old daughter Matilda with her late ex-fiance Heath Ledger - was first romantically linked with the artist when they were spotted holding hands in May 2013 after the Met Gala.

The pair were not spotted together very often and Michelle didn't speak publicly about her romance with the 38-year-old artist.

Though it is unclear when they split, Dustin didn't appear to be with the actress when she and her 'Cabaret' cast and crewmates celebrated the Broadway production's opening night last month, and he also wasn't by her side at the Metropolitan Museum of Art for this year's Met Gala earlier this month.

New York-based Michelle previously dated actor Jason Segel, who lives in Los Angeles, for almost a year until February 2013, with their romance reportedly coming to an end because of the distance between them.

The former 'Dawson's Creek' star previously insisted that her daughter is always her main priority.

She said: ''Raising the kid is the work, yeah. And it's amazing, and it's the ultimate creative act. That's my side project and my centre project.''