Jennifer Lopez in one of her many fursJennifer Lopez in one of her many fursThey said they wouldn't leave J.Lo alone and Peta certainly weren't kidding.

After showing Jennifer up a royal treat at the premiere of Monster In Law earlier in the week, Peta followed her like a bad smell to the Dave Letterman show for yet another round in their anti-Jen campaign.

The protesters, who have made it their mission to attack her fetish for fur, set up camp outside Dave's show with their damning placards.

But Jen wasn't phased, showing more front than Brighton Pier by walking straight past the angry mob.

Police were forced to hold several protesters back who tried to get to Jennifer, who just walked through serenely with hubby Marc Anthony. 

Jen has yet to comment on Peta's campaign against her.