The model was celebrating reaching an out of court settlement with French billionaire François-Henri Pinault over child care for their five-year-old son Augustin.
Linda had been seeking $46,000 a month to pay for live-in nannies and security for the little boy.
The terms of the agreement are not known, but the 'super' seemed happy with the outcome as she attended the fashion gala.
Forty-six-year-old Linda looked sophisticated in a black floor length gown accessorised with a sparkling diamond necklace.
Francois, a luxury goods tycoon, is now married to Salma Hayek, with whom he has a four-year-old daughter.
All the glamour and gossip from the Met Ball