Best & Worst Dressed Stars at the 2015 Billboard Music Awards [PICS]

While no less than six starlets rocked Olivier Rousteing's beloved brand (that's collaborating with H&M, surprise!), there're two particular creations by the designer that stood out amongst the rest. And of course, that would be Taylor Swift's white hot jumpsuit and Kendall Jenner's sleek black and silver ensemble.
Not to be overlooked, Jennifer Lopez shut down the red carpet in yet another nearly-naked confection, this time opting for a version by Charbel Zoe Couture. And speaking of JLo, Olivia Culpo stunned in a sultry beaded Elie Saab jumper that Ms. Lopez wore on American Idol this past season… awkward!
Rounding out the best dressed ladies, Martha Hunt held her own in a punchy purple mini.

As always, not every star can have a winning red carpet look. But there's a difference between off-beat and absolutely baffling—and that's where Dencia comes into the picture. The singer's pop art-inspired jumpsuit—complete with a neon face-print and visor—was just plain bizarre.

Britney Spears failed to turn heads in an underwhelming cream textured gown, and Rita Ora also fell flat in an awkward white Fausto Puglisi cutout gown with elaborate gold star embellishments. Hailee Steinfeld's ruffled black-and-white Givenchy design bordered boxy and boring, and Iggy Azalea's powder blue and nude cropped top set just looked tacky.