Duo play happy families

Sofia Vergara and Joe Manganiello. Picture: Caitlin Vergara/Instagram.

Days after stepping out in public together for the first time, Sofia Vergara celebrated her birthday with her new boyfriend Joe Manganiello at her side.

The Modern Family star, who turned 42 last week, enjoyed an intimate dinner party at Nobu in California at the weekend with her beau and a few members of her family.

The brunette beauty's niece Claudia Vergara shared pictures of the group on Instagram, in which the True Blood hunk has his arm around Vergara.

The actress, who called off her two-year engagement to Nick Loeb in May, was presented with a large cake, decorated with pink roses during the party.

An insider recently revealed the couple are taking their relationship slowly, explaining: "It's very, very new. They're having fun and getting to know each other."

Vergara and Manganiello, 37, started dating after meeting at the White House Correspondents Dinner two months ago and were first spotted together at Li'l Dizzy's Cafe in Louisiana earlier this month after spending the weekend celebrating US Independence Day.

Manganiello previously admitted in an interview he had a huge crush on the Colombian star.