The Chelsea friends seriously turned up the heat with their outfits, with both girls opting for monochrome dresses with saucy sheer panels.
Well, it was a Victoria's Secret event after all!
Millie chose a white crochet and lace number, which would have left little to the imagination had she not covered up with a SPANX body and bra top underneath!
The former Made In Chelsea star left her hair loose in a centre parting and vamped up her make-up with a dark plum lip.
Rosie, meanwhile, opted for a LBD with delicate fringing and beading. The fashionista also wore her hair down, but swept it back from her face, and looked glowing thanks to her highlighted cheeks and peachy blusher.
Commenting on an Instagram photo of herself and Rosie at the VS after-party, Millie told her followers: "After the @victoriassecret show @rosiefortescue #VSfashionshow."
Earlier this week, Millie primped herself with a St. Tropez spray tan and shared a funny picture of herself in the booth.
Last night, she also posted a snap of herself wearing her SPANX all-in-one while getting ready for the show at home.
"Thanks for getting me #frow ready ladies @justinejenkins @angiesmithstyle, #VSfashionshow @victoriassecret so excited! Time to get dressed," she told her followers.
It's fair to say the Victoria's Secret Fashion Show was the place to be seen last night.
Musician Ed Sheeran looked seriously delighted to be performing on stage surrounded by the Angels, while The Saturdays' Rochelle Humes, Vanessa White and Mollie King treated it as a girls' night out.
Meanwhile, One Direction's Liam Payne attended the show with his girlfriend Sophia Smith, as did X Factor judge Mel B and her husband Stephen Belafonte.
Check out the best Victoria's Secret Catwalk pictures here:
Copyright: WENN Lia Toby