She is quite yummy lookin'.

Kaley Cuoco, Penny in The Big Bang Theory. She also did several Priceline commercials with William Shatner. (You gotta know Captain Kirk).

Kaley and Shatner commercial;
https://youtu.be/QENk5Z340HM

The Penny/BBT scene, with the black dress;
https://youtu.be/MYaRNrrUwe4