'Teen Mom 2' Renewed! Jenelle, Leah, Kailyn & Chelsea Begin Filming

Teen Mom 2 may be halfway through airing the current season 7.

But RadarOnline.com has exclusively learned that this season won't be the last.

A source close to production told RadarOnline.com that the hit MTV show has been renewed for an all, new season 8.

That source also said that the girls — Jenelle Evans, Kailyn Lowry, Leah Messer and Chelsea Houska — have already begun filming.

And there definitely won't be any lack in entertainment as all the girls have developing storylines.

As RadarOnline.com previously reported, questions have been swirling around the status of 24-year-old Lowry's marriage to Javi Marroquin, 22, who is currently deployed overseas.

Messer, 24, may have settled her custody disputes with her ex, Corey Simms, but she is still recovering from a stint in rehab.

Plus her 6-year-old daughter Aliannah continues to struggle with her muscular dystrophy diagnosis.

Evans, 24, is also in the middle of a dirty custody war with her ex-fiancé Nathan Griffith over their 1-year-old son Kaiser.

But her family life has taken a turn for the better in the fact that her mother Barbara is now getting along with her boyfriend David Eason.

And Houska, 24, still has yet to say "I do" to her fiancé Cole DeBoer.

With all that's going on in these reality stars' lives, will you tune in for the new season?