Our Britney sources say she's not been asked to be a part of the HBO show, and her team is unsure as to what movie she's referring to in her caption. Britney's been very creative with her social media posts lately, so it's always possible she's producing a movie on her own at home.
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Britney also sent a message to her fans about the upcoming holiday season, saying, "I hope you guys are having a merry ole jolly time cause I sure am !!!!"
Britney's mom, Lynne, was seen arriving in L.A. earlier this week, we're told she plans to spend Thanksgiving with her son Brian who lives in the city. Our sources say there weren't any plans for Britney to join Lynne Thursday, but the invite remains open.