Hayes MacArthur

Hayes MacArthur in a small ceremony in Kennebunkport, Maine, Saturday. The newlyweds, who announced their engagement in December 2007, swapped vows at MacArthur's family home in front of an intimate gathering of close friends and family, among them Larter's BFF actress pal. The 33-year-old Larter and MacArthur, who costarred together in National Lampoon's Homo Erectus, dated for several years before their engagement.

But taking it slow may not have been Larter's choice. "I told my boyfriend after three weeks that I wanted to marry him and that we could do it tomorrow," Larter told Cosmopolitan last year. The ceremony kicked off on the lawn of the estate, with guests arriving in trolleys to the tune of Irish music, in honor of MacArthur's Irish heritage. Larter's father walked her down the aisle.

No wedding date has been set and this will be the first marriage for both. For Larter, the proposal was anything but a surprise; she's been more than ready to marry MacArthur, who has appeared on How I Met Your Mother, almost since she met him. "I told my boyfriend after three weeks that I wanted to marry him and that we could do it tomorrow," Larter recently said. "I look forward to that time when I'm home with babies."