Purple reign: Katy Perry turns heads with a cartoon look as she leads the stars at Billboard Music Awards
02:17 GMT, 21 May 2012
The Billboard Music Awards each year sees the cream of the industry out in force on the red carpet.
So Katy Perry ensured all eyes were on her when she showed up in an extremely coordinated outfit.
The star chose an eye-catching lilac gown by Blumarine that shimmered as she walked at the Las Vegas event.
Ultra violet: Katy Perry was incredibly coordinated at the Billboard Music Awards with an entirely purple look
Katy teamed the dazzling dress with violet curls and lipstick in the exact same shade.
The star brought along her grandmother to the star-studded bash, and wrote on Twitter: 'My date to tonight’s Billboard Music Awards is hotter than the las vegas weather. SMOKIN’!'.
Carrie Underwood also pulled out all the stops as she showed up in a blue and pink hued strapless princess dress.
Close bond: Katy brought her grandmother along to the event and the pair posed together on the red carpet
Red hot: Miley Cyrus and Taylor Swift both went for sexy looks but chose very different outfits
Pretty as a princess: Carrie Underwood also ensured all eyes were on her in a dramatic dress
Star-studded: Zooey Deschanel and Justin Bieber were dressed to impress on the red carpet
The layers of gathered tulle made for a dramatic effect and the blonde chose silver accessories to complement her look.
Taylor Swift looked stunning in a red floor-sweeping dress with a lace-panelled top.
Meanwhile Miley Cyrus took a very different approach in an extremely sexy ensemble.
On-screen couple: Ty Burrell and Julie Bowen of Modern Family fame are hosting the event
Pins on parade: (L-R) Amber Rose, Julianne Hough and Jordin Sparks all bared their legs in mini dresses
Cuddling up: Jordin posed with Jason Derulo on the red carpet and the pair were beaming
Glad they came: The Wanted looked dapper in matching suits as they posed for the cameras
The 19-year-old wore just a white suit jacket that acted as a dress and boasted a plunging neckline, topping off her outfit with zebra striped shoes and bouffant hair.
Jordin Sparks kept things classic and elegant, looking effortlessly glamorous in a simple cream lace mini dress as she posed for photographers.
Jordin teamed her sweet frock with T-strap heeled sandals and a silver cuff, topping her outfit off with a messy ponytail and lashings of red lipstick.
Fancy seeing you here: John Legend and Usher both opted for preppy looks and were spotted shaking hands
Music's finest: (L-R) Alicia Keys, Nelly Furtado and Brandy Norwood were out in force at the event
Suited and booted: (L-R) Gavin DeGraw, Taio Cruz, Robin Thicke and Kris Kristofferson
Party rockers: LMFAO larked around on the red carpet while dressed in colourful but casual attire
The star posed up with Jason Derulo on the red carpet.
The event will be hosted by Ty Burrell and Julie Bowen of Modern Family fame, and the on-screen couple arrived together and happily posed arm in arm on the red carpet.
The Wanted looked dapper in matching suits while LMFAO larked around on the red carpet in casual attire.
Nelly Furtado chose a crocheted white frock and Brandy Norwood picked a taupe fringed mini dress, while Alicia Keys looked stunning in a slinky maxi dress.
Twice as nice: Natasha Bedingfield rocked not one but two glamorous gowns to the event
Subtle: Mike Shinoda (L) and Chester Bennington of Linkin Park were understated in their casual ensembles
Making a statement: (L-R) DJ Virman, Prohgress, Kev Nish and J-Splif of Far East Movement chose oversized necklaces
Party people: (L-R) Gladys Knight, Chrissy Teigen, Kerli and Julie Brown
Dynamic duos: Michael Lockwood and Lisa Marie Presley (L) and Dee and Tommy Hilfiger