By Jen Heger - Breaking Celebrity News Legal Editor

Britney Spears formally got engaged to longtime boyfriend Jason Trawick on Thursday night in Los Angeles, and the Spears clan has welcomed their new future son-in-law with open arms, Breaking Celebrity News is exclusively reporting.

As Breaking Celebrity News was first to report on November 15, Spears knew the engagement would happen by the end of the year, after her blockbuster world tour was over.

Unlike Brit's first two marriages, with Jason Alexander, which lasted a whopping 55 hours before being annulled, and to back-up dancer, Kevin Federline, her family is ecstatic at her choice of husband this time round.

“Brit’s folks are simply over the moon that Jason will become a member of the family. Her parents love and trust Jason with their daughte