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Lauren Lee Smith is leaving the scene of the crime. The actress, who joined the cast of 'CSI' last season, will not return as a regular for the show's upcoming 10th season.

Also in the news today: Shawn Pyfrom exits 'Desperate Housewives,' while USA Network renews 'Burn Notice' and 'Royal Pains.'

See more of today's top TV headlines after the jump.

The Jonas Brothers ... Jamie-Lynn Spears ... Miley Cyrus ... find out where they rank on our list.

Once upon a time, it was possible for a TV child star to get by on an impish smile and cute catchphrase.

Today's crop of kiddie performers don't have it so easy; they need to be double or triple threats who not only head up their own shows and/or TV movies, but sing, dance, star on the big screen, sell out concerts and launch clothing lines (despite some occasional personal missteps).

Here we count down the 20 hottest faves of the teen and tween pack.