The Girls star tied the knot with longtime boyfriend Evan Jonigkeit over the weekend, sharing a sweet message for her newlywed husband on Instagram on Sunday.
"@evanj550 my best friend, my soulmate, my HUSBAND, I love you. Here's to forever and a day," the 28-year-old actress wrote alongside a sweet photo of bride-and-groom rubber duckies.
Jonigkeit, who has appeared in such films as X-Men: Days of Future Past and Whisky Tango Foxtrot, shared the same photo, with the caption, "Last night I married my best friend. @zosiamamet."
The wedding bells came after an emotional week for the Girls cast, who recently finished filming their sixth and final season of the HBO show.
"To say I don't enjoy goodbyes is an understatement," show star and creator Lena Dunham shared in an emotional Instagram post. "I know I'm not alone in the Girls family when I say this is the end of the largest and most potent chapter of my life so far."
Well, we are wishing Mamet well as she moves from that time in her life to the next. Congrats to the happy couple!