The GOOP founder shared a photo to Instagram after Saturday's wedding at her home in The Hamptons.
She was wearing her new gold wedding band as she lay her left manicured hand on top of her husbands.
He had on a matching ring. There was no caption for the image that was set against a black backdrop.
A source revealed: "The wedding ended at 2:30 am - Steven Spielberg, with his wife, were the first celebrity guests to leave at 1:30 a.m.
"A few minutes later, Jerry Seinfeld left, but his wife stayed behind. I think she stayed to party!
"Robert Downey Jr. and his wife left at 2 a.m. Everyone was saying Robert was definitely the coolest guest at the wedding, especially with that crazy red, black and white-checkered hat he was wearing.
"Cameron looked super tired. They left at 2:30 a.m. and stayed at a nearby resort.
"Restoration Hardware brought in all of the furnishings for the wedding. They began carting in a bunch of the furniture three days before the wedding, and they were in charge of the furniture and a lot of the décor".
It is understood that the newly weds are staying in The Hamptons for a few days before heading off on a honeymoon.
And proud mom Blythe Danner, 75, was thrilled about her famous daughter's ceremony.
"It was gorgeous – the most beautiful wedding I have ever seen," she gushed.
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