Best of 2009

Whoa! Stars' Most Outrageous Twitter Pics!

From a toothless Demi to a topless Lindsay, take a look at the year's funniest, silliest – and nakedest! – Twitter pics!

CASSIE

The singer took fans by surprise when she posted her half-shaved head on Twitter in April. Although many hated the look, Cassie Tweeted that it is "something that will shock your mother, but make her call you a ROCK STAR ... yeah I did it."