Victoria Beckham is hoping to spice up a skin cancer awareness campaign by stripping off for fashion designer Marc Jacobs The Spice Girl poses naked for a new charity T-shirt in a bid to warn people of the dangers of excessive sun exposure. She says, "Since we moved to California I have realised how important it is to practice safe sun for myself and to keep my three boys' skin well protected as well. "Skin cancer is a huge problem and I really wanted to help raise awareness by taking part in Marc's initiative." The shirts, which have been signed by the star, will be on sale from next week (begs04Feb08).