The #10YearChallenge trend, which involves sharing a photo/clip from 10 years ago sometimes with a recent snapshot, is in full swing -- and a bunch of MTV shows decided to take part in the current craze. #ChallengeAccepted: We're going back to 2009, folks!

Take a look at the special roundup below (hello, babies!), and be sure to watch the premiere of Teen Mom 2 tonight at 9/8c, Lindsay Lohan's Beach Club on Tuesdays at 8/7c and MTV Floribama Shore on Thursdays at 9/8c. Then stay with MTV News for updates on the other series!