Ke$ha
Olsen Twin?
1/7/2010 5:44 PM PST
Ke$ha -- Olsen Twin?
Here's bubblegum pop newbie
Ke$ha -- the chick who sings that "
Tik Tok" song you can't get out of ya head -- at some event in NYC last month (
left) and wonder twin
Mary-Kate Olsen a few months ago (
right).

So far, only one has been to rehab.
We're just sayin'.