They famously feuded over singer Aaron Carter, 19, (who dated them both), but Lindsay Lohan, 20, and Hilary Duff, 19, put it all behind them at Hollywood club Les Deux on March 30. Lohan hugged Duff and partied by her side.

So where did the bad blood begin?

In 2005, Carter appeared on the talk show The Big Idea With Donny Deutsch and told the host, “I started dating Hilary on my 13th birthday… I was dating her for like a year-and-a-half and then I just got a little bored so I went and I started getting to know Lindsay, dating Lindsay.”

But as the girls were getting reacquainted last weekend, they found someone else to scorn.

A source tells Us Weekly, “They were making fun of Paris!”

Lohan even danced on a couch spoofing Hilton when one of her tunes played!