En route to the soiree, Catherine shared an adorable family selfie of the stylish trio.
The Douglas squad had a cozy front row seat, tucked alongside Kate Hudson and Kerry Washington. The only person missing the party was Carys's big brother Dylan, who, to be fair, is probably busy hitting the books at Brown University.
Catherine and Carys, who not only sported identical waves but matchy eyeshadow, too — the perfect complement to Zeta-Jones's burgundy wrap dress.
The surprise of the week came when Barry Manilow closed the show.