The Brit BFFs turned up to the event in New York both showing off a healthy dollop of side boob as they walked the red carpet outside the Metropolitan Museum of Art.
Rita went braless in her white Thakoon dress, while Cara took the plunge in a spiky Burberry LBD, as she embraced the punk theme of the event.
The 'model of the moment' was no-doubt trying to detract from the recent controversy that has surrounded her after she was papped dropping a packet of suspicious white powder outside her London home last week.
H&M - who Cara models for - are now investigating claims that it was cocaine in accordance with their zero tolerance attitude to drug use.
They have said they may drop her from future campaigns if it is found that Cara has been using drugs, but she showed little sign of concern as she joined a line-up of Brits at last night's gala to celebrate the opening of the museum's fashion exhibition.