Britney Spears gets engaged; shows off ring

The 'Criminal' hitmaker's boyfriend Jason Trawick was expected to propose last Friday (16.12.11) but surprised Britney by doing it on the Thursday night, and has celebrated her saying yes by throwing a huge party at the Chocolate Lounge and Sugar Factory in the Paris Hotel in Las Vegas.

Britney wrote on twitter: "OMG. Last night Jason surprised me with the one gift I've been waiting for. Can't wait to show you! SO SO SO excited!!!! Xxo(sic)"

Britney Spears is now engaged

At the party, the couple enjoyed a giant chocolate fondue fountain and chocolate truffle cigars, before heading off to the Chateau nightclub, TMZ.com reports.

Britney Spears' new 3-carat Neil Lane engagement ring

Jason - who has been dating Britney for two years - asked permission from her father Jamie before getting down and one knee.

The singer, who has been married twice before, will now need to get a judge to formally sign off the marriage as she continues to be under the conservatorship of her father after a public breakdown more than three years ago.

Britney Spears with fiance Jason Trawick

A source said previously: "When Britney does get engaged, her father's attorneys will notify the judge in her conservatorship case. It's extremely within the realm of possibility that the conservatorship will end, and then Britney will get married. It will be a very smooth transition."