Heroes star Hayden Panettiere had to stop her mother selling her underwear on the internet.

The actress has been raising money for Save the Whales by auctioning off her belongings through her website Panettiere's Closet.

But some embarrassing items almost ended up on the site.

The 18-year-old explains, "You acquire a lot of stuff so I decided to put it on the website. Mom pulled out some embarrassing stuff, but I'm like, 'Just don't pull out my underwear'."