Fake nude pics of "Gossip Girl" star BLAKE LIVELY appear online as internet ignites from fake uber-hotness!

A Photoshopped image of Blake, 23, who also stars in the summer blockbuster "Green Lantern" is shown going full frontal in several pix posted online Tuesday.

In the fake pix, a blond woman looking remarkably like Lively can be seen holding an iPhone as she snaps herself naked in front of a looking glass.

The blond bombshell’s rep has strongly denied claims that the pictures are legit.

"The photos of Blake Lively which have just surfaced on various websites including Perez Hilton and are 100 percent fake," Blake’s flack told media today.

"Blake has NEVER taken nude photos of herself.
"Blake will pursue legal action against the publication which initially published these photographs and any other outlets that republish them in any manner," the rep added litigiously.

Ok, so chalk it up to a Photoshop whiz but what about those pap snaps circulating of leggy Lively holding hands with A-list hunk Leo DiCaprio?