Man they just keep getting younger!

It seems that being the kid sister of someone is the best thing that can happen especially if it happens to be Britney Spears.

Now that Jessica Simpson's younger sister, Ashlee, and Hillary Duff's younger sibling, Haylie, have jumped into the limelight and threaten to eclipse their sister's careers could Britney's kid sister, 13-year-old, Jamie Lynn, be far behind?

She's becoming more popular every day and has teamed up with blast-from-the-past, Fred Savage, who is directing her in the Nickelodeon TV series, "Zoey 101" a show about an all boys boarding school that has begun accepting girls. Uh-oh.

The show debuts in January and sounds like fun for young viewers.