Selena Gomez Red Carpet Fashion at the Teen Choice Awards (Photo : Twitter )

Selena Gomez stole the spotlight as she turned 20 and won big at the Teen Choice Awards on Sunday.

Gomez dazzled in a hot pink dress by Dsquared2 and Herve Leger heels. The dress from the brand’s Resourt 2013 collection comes with a kicky skirt and drop-waist pleats.

The “Spring Breakers” actress let down her brunette hair on her shoulders.

Gomez took home the Choice Music Group for her band “Selena Gomez and the Scene” at the 14th annual Teen Choice Awards.

The entire crowd of thousands gathered at Los Angeles's Gibson Amphitheatre celebrated Selena’s birthday, serenading "Happy Birthday" for the new 20-year-old pop star.

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The hosts celebrated the pop star’s exit from teenage with a massive display of cupcakes with sparklers.

"This is the best birthday present ever," Gomez said upon receiving her Teen Choice surf board.

Selena Gomez at Teen Choice Awards

“Selena Gomez and the Scene,” which sprouted in Hollywood in 2008, is led and founded by Gomez, and consists of bassist Joey Clement, guitarist Drew Taubenfeld, drummer Greg Garman and keyboardist Dane Forrest.

So far, the pop band released three studio albums, seven singles and seven music videos.

The night is not over yet. Selena is also nominated for Choice Single by a Group for her band’s "Hit The Lights."

Gomez, who has stayed close to her beau Justin Bieber, reportedly began celebrating her birthday together as early as last weekend in Australia.

Gomez and Bieber were spotted at a party of 16 people last Saturday as the duo dined at Stokehouse Restaurant, said Hollywood Life.
"They were all having a great time together," a source said.
"Justin and Selena were laughing and making jokes with each other."

After Selena Gomez followed Justin Bieber to his “Beileve” world tour, the pop star duo was spotted Saturday at a local Target store in Calabasas, California, walking the aisles looking for some kitchen appliances.

The love life - and everything else - of now 20-year-old star seems to get only sweeter.