The Hills stars Audrina Patridge and Heidi Montag are like peas and carrots again, and the newly reunited BFFs have discovered a new favorite past-time, unleashing clandestine verbal assaults on Lauren Conrad.

Star Magazine claims Heidi and Audrina entered a truce over the weekend of December 14th, the girls even went public with their reunion when they went partying together on December 20th.

“Heidi and Audrina are definitely tight again-they even sealed their truce with a big hug,” a spy tells the tab.

“It’s all back to normal, like they never even had a fight in the first place. Now they just want to be friends and grow close.”

Audrina and Heidi have wasted no time bonding over their now mutual dislike for fellow MTV reality star Lauren Conrad:

“Audrina has been saying some nasty things about LC….She says LC is “crazy” and “difficult.”

“Audrina is just sick of LC’s ways. She can be moody and wants to be the queen bee all the time. I just think it’s finally gotten to Audrina,” the snitch tells Star.

“…I expect Audrina’s support for Heidi will be front and center next season.”