pbr Peter Andre has laid into his ex-wife Katie Price after she straightened their daughter's hair.br ppbr Three-year-old Princess has naturally curly blonde locks, but has been photographed this week with poker straight hair while out with her mum.br ppbr Writing in his New! magazine column, Peter said: "There was a photo in the papers of Princess and her mum, and my daughter clearly had her hair straightened.br ppbr "In my opinion, a three-year-old child shouldn't have her lovely hair straightened. If she wants to do it when she's older that's fine. I'd prefer it if her lovely curls were left natural."br ppbr This is not the first time Pete, who recently confirmed he is now dating model Elen Rivas, has slammed Katie for 'dolling up' their daughter.br ppbr Last year, the 37-year-old said he was "absolutely disgusted" when a snap of Princess in make-up and false eyelashes appeared online.br ppbr Meanwhile, there are rumours that Pete has been invited to Prince William and Kate Middleton's upcoming wedding.br ppbr Pete's spokesperson, Claire Powell, refused to confirm the speculation but said: "He has some live shows he's supposed to be doing around that date and we're looking to move some of those around.