Kristin Cavallari, Lauren Conrad Look Good, Exchange Dirty Looks; Jason Wahler Arrested

When these two collide... there is bound to be mad drama in the house! Yup, we're talking about Laguna Beach babes and alumni Lauren Conrad (left) and Kristin Cavallari. Both were in fine, preppy form at the Lacoste fashion show Saturday in New York.

The two, who were bitter rivals on Laguna Beach (and not always for the clearest reasons), reportedly both sat in the front row, but separately. Witnesses say they exchanged icy glares. The plot thickens! It was not reported whether the underage Cavallari was boozing.

In other Laguna Beach alumni news, Jason Wahler (Lauren's ex, who appeared on The Hills as well as Laguna Beach) was apparently arrested in New York City on September 1, at 4:34 a.m., in New York City. He was charged with three counts of bribery, criminal possession of a controlled substance, resisting arrest and disorderly conduct.

If you're wondering how J-Wahl took that breakup with LC, well, you may have your answer. He's also just a freaking moron.