Jennifer Lopez and Casper Smart

Jennifer Lopez and Casper Smart

Jennifer Lopez celebrated her upcoming 44th birthday with an American-themed barbecue on Saturday (20.07.13).

The 'Dance Again' singer, who turns 44 on Wednesday (24.07.13), saw in the milestone at her new Water Mill estate in The Hamptons, New York, with her boyfriend Casper Smart and several star friends including Alicia Keys and record executive L.A. Reid for a family-friendly fun day.

The partygoers demolished "lots of mojitos" on the estate of Jennifer's $10 million mansion, and the event also featured a trampoline and an array of party games such as water balloon fights and a sack race, of which the brunette beauty's 25-year-old beau eased to victory.

A source told The New York Post newspaper: "The clear winner was Casper Smart."

New York City Police Department commissioner Ray Kelly and Jennifer's manager Benny Medina also helped to make the day special for the birthday girl by giving a special speech in honour of the star.

Jennifer - who has five-year-old twins Max and Emme with her third ex-husband, Marc Anthony - was also presented with a cake, which was illuminated by sparklers lit by Jennifer's "parents, kids, aunts and cousins".

The singer recently splashed out $10 million on her Hamptons home after falling in love with the 8,659-square-foot property.

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