Lily Allen and David Harbour have separated after four years of marriage, multiple sources have confirmed to PEOPLE. "Her marriage has been crumbling and they have split," a source told the US publication exclusively.

Lily Allen and David Harbour have separated after four years of marriage and she's "devastated"—here's what happened. The reality television star also debuted a chic flipped-out bob at the soirée.

Unfortunately for fans of the couple, it seems to be all over for David Harbour and Lily Allen, who is "devastated" by the split.