The claws are reportedly out between Kirsten Dunst and Drew Barrymore as the pair squabble for the affections of Justin Long.

The two actresses crossed paths at the filming of Saturday Night Live, where they had showed up to support pals Cameron Diaz and James Franco.

In recent months, Kirsten has been romantically linked with Justin, who split with Drew only a short while ago – resulting in a very complicated love triangle.

And despite trying to make the best of an awkward situation during their recent encounter, the pair were reportedly unable to avoid a few tense moments.

"Drew and Kirsten had a really awkward run-in," a source tells OK!.

"James had to deflect the situation by making a joke and walking away with Kirsten while Drew then fumed about it to Cameron."

And things didn't improve at the show's afterparty, according to the insider.

"Both Drew and Kirsten were there, but Kirsten didn't want to be near her, so they stayed far away from each other the entire night," added the source.

Play nice ladies...