Confirmed: Jen to Guest Star on 30 Rock

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As first reported by OK! yesterday, Jennifer Aniston has been in talks to make a guest appearance on the hit NBC sitcom 30 Rock.

And now, ET Canada has received confirmation from the actress' rep that it's definitely going to happen.

This will mark Jen's first return to the network that made her into a household name when Friends began its amazing 10-season on NBC in 1994. Since the show ended in May 2004, the actress has focused solely on film, making only one TV appearance on an episode of BFF Courteney Cox's F/X show Dirt.

Insiders tell OK! that Jen is scheduled to begin shooting any day now at NYC's Silvercup Studios.

For those readers north of the border, check out ET Canada tonight for the full story.