Now entering its third iteration, the very popular Teen Mom series on MTV should provide to be a cautionary tale for young girls. Whether that cautionary tale is about the perils of becoming a teen mom or becoming a famous teen mom (arrests, appearing porn, tabloid covers about your personal heartaches) is up for debate.

Four new teenage mothers who appeared on MTV's 16 and Pregnant will make up this season's cast: Mackenzie, Briana, Katie, and Alex. We don't know who we'll feel worse for, these kids (by that we mean, both the teen parents and their babies) or ourselves for getting sucked in yet another season.

Teen Mom 3 airs 10 PM on MTV. There's even more high-stakes reality drama when the The Real Housewives of Orange County endure part 3 of their reunion special on Bravo at 8 PM and Bear Grylls attempts to Get Out Alive on NBC at 9 PM.

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