Kevin Federline has accused Beyonce of having Botox surgery.
Beyonce
The 37-year-old DJ - who is best known for his three-year marriage to pop star Britney Spears - has taken to social media to accuse the 'Drunk in Love' hitmaker of having Botox surgery after she was seen on TV alongside her husband Jay Z at a boxing fight in Las Vegas on Saturday night (21.11.15).
Kevin tweeted: "She looked botoxed. (sic)"
Later, he added: "So sad when a beautiful woman chops and screws her face up with Botox and surgery."
Earlier this year, meanwhile, Kevin admitted his high-profile relationship with Britney was "chaos", adding that the attention they received was difficult to manage.
Kevin - who married Britney in 2004 and shares sons Sean Preston, 10, and Jayden, nine, with the pop icon - said: "'It was fun, it was crazy, it was chaos...The limelight, the entertainment business, the lifestyle - period. When you're 25-years-old, how do you handle that? Nobody can prepare you."
Kevin is now married to former volleyball player Victoria Prince, with whom he has two daughters - Jordan, four, and 19-month-old Peyton.
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