But as her plus one, she took her secret boyfriend!
Yes, that's right, actor Jamie Foxx finally accompanied his girlfriend of almost almost six years to the MET Gala after trying their very best to play cat and mouse with the world.
Their sexy date night officially makes them red carpet official - and we're loving it!
In the past, reps for the actors have called reports of a relationship "100 percent not true," but according to insiders, the reasoning behind keeping their romance top secret had everything to do with her ex-husband.
Katie, who's mum to 13-year-old Suri, divorced from Tom Cruise after six years of marriage in 2012, and a reported clause in Katie’s divorce settlement from the world’s most famous Scientologist allegedly banned her from publicly dating for five years.
In 2017, Katie and Jamie were photographed hand-in-hand, strolling along the beach.
Come 2019, it's on!