TMZ reports that the Heroes actress' Los Angeles home was robbed last week, and the thieves made off with about $15,000 in jewelry.

According to cops, burglars heisted the loot while Hayden was on vacation. When she returned on April 15, she discovered that the jewelry was gone.

Reports indicate that there were no signs of forced entry, and that several people were in and out of the house while she was gone.

So far the thieves have yet to be apprehended. And cops will probably have their work cut out for them, since Hayden hasn't exactly been going out of her way to make friends lately.