Kate Bosworth has a new hairstyle. During New York City Fashion Week, however, concerned friends and peers were focused on the rest of the actress. If they could see her, that is.

"She's so small, it's frightening," said one insider in attendance.

Another attendee added that, "She's always been small, but now she is really, really skinny."

It's hard to argue with that. Bosworth is starting to make Mary-Kate Olsen look like a hog.

Those around the star were left to wonder about reasons for such weight loss. The split with Orlando Bloom, for instance, was theorized by one source who said "she's emotionally and physically strained."

The 23-year-old actress' rep declined to comment on her weight, but Bosworth has spoken in the past about pressure to be thin.

"I think part of being an actress (is) that your body's your tool," she told Showbiz Tonight in July.

But since Bosworth hasn't filmed anything in more than a year now, some are hoping she will take a closer look at herself. "Every time I saw her," said the source, "I kept thinking, 'Please eat something.'"

We recommend some crazy pie. Stephen Baldwin has been downing it for years, apparently.