Lindsay Lohan

Yesterday Lindsay Lohan was spotted outside of Sam's house, wearing her uniform of black leggings and boots, and we're shocked to see her in such a sour mood. Okay, I lied, it's not that shocking, but still! She was so happy and carefree over the weekend, we have no idea what happened!

Oh, and keep in mind...this was before Lindsay's assistant smacked her Maserati into another car, and nearly 8 hours before Sam locked herself in the bathroom.

So what's eating Lindsay?