Ellen DeGeneres and Bergdorf Goodman are BFFs — at least until Sept. 30.

The luxury retailer showcased the comedian’s new lifestyle brand, ED, at a star-studded soirée on the store’s sixth floor Thursday night that attracted such boldfacers as Kanye West, Justin Timberlake, Robin Roberts and Diane Sawyer.

But the partnership is as fleeting as the party’s air kisses.

The pricey merchandise — throw pillows go for $525, and a pair of cashmere drawstring pants are $895 — will be sold on bergdorfgoodman.com only through the end of the month, while the home goods will be available in stores only through Sept. 22.

The partners call it an online pop-up store. DeGeneres also has a partnership with QVC, which is selling less expensive ED wares.