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"The Hills" girls are back on! Lauren Conrad and Heidi Montag have reportedly made up after years of bitter feuding.

The former friends were spotted hugging it out -- after two years of not speaking -- says Us Magazine.

Both were out at hot spot STK in L.A. last night, where L.C. was celebrating her runway show at fashion week. Heidi and boyfriend Spencer Pratt were at the bar eating dinner.

Upon seeing her old BFF, Heidi was spotted asking to congratulate her on her new line. The two spoke and were then seen embracing each other, smiling.

But not everyone was happy to be part of the reunion. Heidi's boyfriend, who instigated the rift between them, kept his distance and left with Heidi a short time later. Only time will tell if their relationship can mend with Pratt still in the picture.