Britney Spears Family Friendly Party: Jamie Lynn Not Included

By all accounts, Britney Spears appears to have turned her life around and she has made quite the reversal from her hard partying wild nights she used to spend with Paris Hilton and Lindsay Lohan and now the one time pop star is making moves to get her life back in order. She is still throwing parties, but they are family friendly, though in an odd twist, pregnant little sister Jamie Lynn spears is not included.

Us Weekly magazine has a report published in the magazine this week that notes that the Britney impressed her guests at a bash for her big brother. On the afternoon of April 19, the pop star, 26, attended a birthday celebration for her brother, Bryan, 31, hosted by their parents, Jamie and Lynne, at Britney's Malibu, California, home. The report notes that mixed in with Bryan's 40 friends were Britney's former manager Larry Rudolph and current agent Jason Trawick. And again, her pregnant little sister, Jamie Lynn, 17, was not there.

"The atmosphere was fantastic," a source says of the casual backyard bash. "It was a crayfish party. Jamie was barbecuing and music was playing." For her part, Britney spent much of the party relaxing on an upstairs balcony, but "was happy and sociable," says a second source.

Though another guest observed Britney seemed "out of it" (likely a side effect of adjusting to her bipolar disorder medication), the partygoer says she was "like the girl she used to be." As for reports she is reprising her role on the CBS sitcom How I Met Your Mother, a close source says they are premature: "Nothing is signed yet.No script has been written, and until that is done, Britney will not be making a commitment."