AceShowbiz -

After presented a cake on stage of 2012 Teen Choice Awards, Selena Gomez celebrated her birthday with her boyfriend Justin Bieber. The young couple went on a dinner at Beverly Hills restaurant Il Cielo on Sunday night, July 22.

They were joined by family and friends. "Beyond blessed, so much love. Thank you for the most incredible birthday yet! I'm truly, truly grateful. I love my family, friends and all of you," tweeted the birthday girl who turned 20 on that day.

They booked a dinner for 12 and arrived in the eatery in Bieber's customized Mercedes minibus, according to E! News. They sat in the private back patio which floor was covered in rose petals to match Gomez's pink Dsquared2 minidress she wore to the TCAs earlier in the evening.

The group enjoyed cocktail and a flour-less chocolate birthday cake with fresh raspberries and whipped cream. Gomez had ginger ale and Bieber sipped Coca-Cola since they were still underage for drinking. "Selena was just a doll, so humble and sweet," said restaurant owner Pattie Vericella.

Gomez won Choice Music Group with her band The Scene at the TCAs, while Bieber grabbed Choice Male Artist, Choice Single by a Male Artist, Choice Summer Music Star: Male and Choice Fashion Icon: Male.