Kevin Federline claims that Britney Spears drank while pregnant and did cocaine while breastfeeding in new excerpts from the former dancer’s upcoming memoir , published in several news outlets.

These claims in You Thought You Knew (out Oct. 21), especially regarding Spears’ alleged cocaine use, contradict the pop star’s own memoir , in which she downplayed speculation about substance use during her party days. In The Woman in Me , Spears said that she “never had a drinking problem” and wasn’t interested in hard drugs, calling the ADHD med Adderall her “drug of choice.”

But Federline claims in his new book that he started to worry about Spears when she allegedly began drinking alcohol not only while pregnant, but while taking other medications, too. Though he didn’t say wha

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