The Hills gals, 23 and 22 respectively, recently buried the hatchet after an epic brawl over whether Conrad had knocked boots with Patridge's former beau, 27-year-old Justin Bobby.

Once again close pals, the merry duo were at the Ashley Paige boutique on Cahuenga Boulevard in Los Angeles on Thursday, filming another episode of the recently renewed reality show.

And how did the two ladies further cement their bond? By shopping for bikinis, of course. Never mind that it's December; Patridge, in particular, seems to have a never-ending need for the things.

The two sure did seem to enjoy themselves on the shopping excursion. And aren't you enjoying yourself, watching them enjoy themselves?

See how easy it is to get along, when bikinis are involved?