Lindsay Lohan and Paris Hilton are back together!

The infamous frenemies have been partying together at the same Hollywood Hills home two nights in a row, X17online can report, exclusively!

Lindsay finished taping her Glee cameo yesterday afternoon and hit up Bar Marmont at 11pm with her castmates for a wrap party. She proceeded to a house party around 1:30am and stayed until 6am!!!

Our photographers also spotted Paris Hilton at the same ultra-modern mansion until the wee hours of the morning both nights.

You think these two are besties again or just in the same place at the same time with the same circle of friends?