Among the enormous names, Red Sparrow star Jennifer Lawrence attended Amy's wedding.
For her part, Schumer seems to have pulled off the ultimate celebrity feat and had a serious relationship right under the media's noses.
The source said the couple read their own vows and that the ceremony was "very sweet, touching and, of course, funny".
"It was very sudden, but it was, I was sobbing...his vows were stunning". The event, held at a rented mansion on the ocean, was a star-studded affair, with celeb invitees including Jennifer Lawrence, Jennifer Aniston, Judd Apatow, Larry David, Jake Gyllenhaal, Chelsea Handler, Jerry Seinfeld, and David Spade, among others.
While Schumer's bridal look was simple and lovely, her sense of humor really came out when deciding to dress her sister, Kim, and her new sister-in-law, Molly, in classic pink bridesmaids dresses.
"It didn't come as a surprise at all to me that they wanted to get married", Evans says.
But Jennifer, who wore a pink sleeveless high-collar Philosophy dress to the nuptials, reveals her attire was less than ideal at the bash and the wedding day images will now memorialise her wardrobe malfunction for eternity. In every wedding photo all of my buttons were undone.
"No gifts but thank you for asking", she wrote. In fact, Schumer finally confirmed that they were dating just last week - mere days before their matrimony - when she shared a photo of them smooching in a photo booth at Ellen DeGeneres' 60th birthday party.
She also confirmed she was not pregnant.
Instead, Schumer asked fans to make a donation to EveryTown in the name of gun safety.