Former Spice Girl Mel C has blasted Britney Spears for her alleged transformation from the innocent schoolgirl to the raunchy vamp - branding her "overtly sexual".

"Britney's gone too far. I find it really shocking. She's overtly sexual in everything she does. I see her and I think: 'Put it away, love,'" Mel C was quoted as saying.

Mel C had earlier this month slammed Robbie Williams for claiming he had slept with four out of the five Spice Girls, saying she knew "a few of the Spice Girls he didn't sleep with".

The brunette singer also put a stop to any rumours of the former girl pop band reforming - calling it's too late because they're all too old.

"We'd look a bit stupid if we got up on stage now and started dancing around to 'Wannabe'."