The 2013 Billboard Music Awards red carpet was red hot, with Selena Gomez  leading the pack. The singer was one of the first to arrive — and she did so in an eye-catching neon-infused Atelier  Versace  gown from the label's Spring '13 collection. Also in the mix? Jennifer Lopez , Taylor Swift , Chloë Moretz, Hayden Panettiere , and a very sexy Jennifer Morrison. Of course, that's just the tip of the iceberg. Click through to see who wore what at the Billboard Music Awards.
— Additional reporting by Melody Nazarian
Like her Met Gala getup , Madonna  dared to go punk again in Givenchy  Haute Couture while accepting an award for Top Touring Artist on stage at the Billboard Awards. She wore a plush fur-accented jacket over a black leotard, then added more daring details: sheer stockings, wraparound sunglasses, a studded belt, a padlock choker, and an oversize ring.
Jennifer Lopez  stunned (and sparkled) in a plunging gold embellished Zuhair Murad gown with a sheer skirt and gold ankle-strap pumps.
Taylor Swift  showed off her legs in a vibrant blue Zuhair Murad minidress from the Pre-Fall '13 collection. She matched the sapphire hue with Ofira earrings and ring.
Selena Gomez  chose a neon-infused Atelier Versace Spring '13 gown, complete with a sexy thigh-high slit. To finish, she wore silver metallic sandals and a high ponytail.
Miley Cyrus  showed off her fit figure in a Balmain  jumpsuit featuring a black checker-like print. She finished it all off with black Givenchy  sandals and a bold red lip.
Emmy Rossum wowed in a black long-sleeved Zuhair Murad gown. The silhouette was dramatic but the sheer polka dots added lots of charm.
Nicki Minaj brought the color in a bright red gown with sequins along the bodice and matching platform sandals.
Chloë Moretz opted for a dress that was both playful and geometric-inspired — a perfect pick for the young style setter.
Hayden Panettiere  was a vision in a simple black gown that featured a sleek asymmetrical neckline.
Ke$ha ditched her funky layers for an incredibly chic little black ruffle dress, minimalistic nude ankle-strap sandals, and Jupiter Jewelry diamond bracelets.
Kelly Rowland dazzled while posing in her Rami Al Ali metallic gown and coordinating silver ankle-strap sandals.
Jennifer Morrison turned heads in a very sexy Kristian Aadvenik dress. Between the corseted bodice and sheer skirt, there are quite a few skin-revealing elements to take in. She then added a black Edie Parker  clutch to match.
Carly Rae Jepsen played with proportions, albeit subtly, with this "high" meets low LBD.
Shania Twain's silver strapless gown came with a cool knot detail that gave it a unique spin.
Ariana Grande went flirty — with a dose of high shine — with her strapless full-skirted cocktail dress.
Stana Katic took a major plunge in a white striped jumpsuit, complete with a silver metallic belt.
Alyssa Milano  went with all-white in a one-shouldered tunic, complete with sheer wide-leg trousers.
Kimberly Perry, of The Band Perry, went with something much more glamorous, thanks to a princess-like pearl white skirt and embellished bodice combination.
Avril Lavigne  — pictured here with fiancé Chad Kroeger — was edgy in a black leather minidress and black sandal boots.
Jenny McCarthy  went the midriff baring route, pairing a cropped tank top with a semisheer racer-band maxi skirt to complete the effect.
Amber Rose kept it simple in a sheer-sleeved black shift and sandals.