The 'Toxic' singer, who has been criticised in the past for her mothering skills, reportedly bought candy, clothes and chocolate for sons Sean Preston, 4, and 3-year-old Jayden James, her boyfriend Jason Trawick and employees at the Sugar Factory in Las Vegas.
According to Bang Showbiz, a source said: "She spent about $3,000 and walked out of the store with 10 bags. She got a bunch of candy and shirts for her kids and got a bunch of the couture lollipops to give to her back-up dancers."
Spears, who was in the city for the final US show of her world 'Circus' tour, allegedly had extra goods sent up to her room at the Mirage hotel.
Celebrities such as Barry Manilow and ex-NSYNC star Lance Bass were in the audience for Spears's final show, where she gave the latter a lap dance during single 'Breathe On Me'.