Alesha DixonAlesha DixonValentine's Day. It conjours up visions of rose petals, bubble baths, champagne and choccies, right?

Not in Alesha Dixon's world.

The Strictly Come Dancing winner instead chose to whip off her kecks and hop into a bath...

... Full of handy little devices to protect against unplanned parenthood and nasty ol' STDs.

Alesha has become the face of the Department of Health's Condom Essential Wear Valentine's campaign.

She's braving all those pointy corners and cold plastic packets to remind peeps to always carry and use condoms.

But Ms Dixon isn't the only star to put her face to a good cause.

Check out all the goody-two-shoes famous folk in our gallery of charitable celebs.