Samantha Ronson is the woman who Lindsay Lohan was caught partying with, reportedly screaming profanities at, and partying with again over Memorial Day weekend reports MSNBC

Ronson has been spinning at a host of exclusive parties for years. Some of the most notable, according to her own Web site include Jessica Simpson’s birthday party and corporate events for Blender, Maxim, PlayStation and ElleGirl. She also DJ’d alongside Lohan at the American Music Awards one year, but Ronson’s history with the star goes back much further.

Ronson comes from a musical family. Her brother Mark Ronson is also a world-traveling DJ who just released an artist album where he produced such stars as Amy Winehouse and Lily Allen.