Lindsay Lohan posted a close-up snap of her trout pout on Twitter.com in a bid to kill off rumors that she had her lips plumped up with collagen injections.

In a message accompanying her close-up, LiLo Tweeted: “Why are all of my friends asking me if I have a cut on my lip? Lol coz I don’t…..see! my lips are just as they’ve always been :) lol-it’s nuts that i feel the need to give proof!”