First, Victoria's Secret Supermodel Adriana Lima can’t keep her pretty mouth shut!!

She constantly has her mouth open in pictures:

The wide mouthed, tongue out, and raunchy kind of mouth open!

Now Hayden Panettiere is doing the same thing!!

Is it because she is only 17 and still inexperienced and her mouth is dying to get some experience but she still has 4 months to go before she can get some experience?

So in the meantime she is just practicing her jaw muscles?