Charlie Brown's Lost Sister

The fashion police are all over British actress Carey Mulligan for wearing this frumpy frock on the red carpet earlier this week.  She was out and about looking like Charlie Brown's long lost sister for the opening of the 2010 BFI London Film Festival.  Does anyone else think she could be trying to hide a baby bump?

P.S. If you haven't see Carey in the movie An Education, add it to your Netflicks list immediately.  It was an amazing film.  Unfortunately, I can't say the same about Wall Street 2.