Guests at the event included Jerry Seinfeld, Steven Spielberg, Cameron Diaz and her husband Benji Madden and Robert Downey Jr.
The Iron Man actress took to Instagram to confirm the good news, and show off the couples new matching wedding bands.
The wedding came just days after Gwyn celebrated her 46th birthday and her now-husband shared a sweet tribute on Instagram, writing that the actress keeps “getting better every year.”
The couple announced their engagement back in January after three years together. They met on the set of Glee in 2010 where Falchuk worked as co-creator.
The pair held a star-studded engagement party back in April, which had been rumoured at the time to have been a secret wedding.
Gwyn was previously married to Coldplay frontman Chris Martin and the pair famously eloped when they married in 2003, so the actress said she was treating this wedding as though it’s her first.
“I’ve never had a wedding before so even though I’m 45, I sort of feel like a 21-year-old,” she previously told People.
“It’s kind of fun to talk about with my girlfriends. They send me pictures of dresses — they’re as excited about it as I am,” she added.