Hollywood superstar Nicole Kidman has a fashion secret - she loves wearing men's pyjamas. The actress, who is currently pregnant with husband Keith Urban's child, admits she's a big fan of posh male sleepwear. She says, "I love wearing beautiful pyjamas, so last night I had on some (French brand) Frette men's ones. There is something very sexy about them. "My favourite clothing is lingerie. Keith loves it."