There's no stopping Denise Richards! This busy mama of three is taking a break from mommy duty to film a stint on 30 Rock with a very affectionate white dog. Adorbs!

We all know Charlie Sheen's ex is gorgeous, but over the years she's proven that her comedic timing is top notch, too.

Dressed in a leather jacket with animal print, pink scarf and letting her hair flow free, Denise looked picture perfect on set alongside series regular Tracy Morgan.

Click thru to see who else was on the NYC set with Denise.