'Teen Mom' Season 4 Will Be Last For Original Stars Maci, Catelynn, Amber And Farrah (REPORT)

It's out with the old and in with the new for MTV's "Teen Mom" franchise. The original "Teen Mom" cast is getting the boot, according to a new report.

"Season 4 will be the final season of 'Teen Mom' with Maci, Catelynn, Amber and Farrah," MTV exclusively told Us Weekly. A premiere date for the fourth and finale season of "Teen Mom" has not yet been announced, but is expected to air this summer.

Maci Bookout, Amber Portwood, Farrah Abraham and Catelynn Lowell were all part of the first season of MTV's "16 and Pregnant" in 2009, and moved on to appear in the first installment of its spin-off "Teen Mom." On the MTV hit reality docudrama, viewers have watched the four women deal with break-ups, adoptions, proposals, abuse, arrests and other struggles over three seasons of the original installment of "Teen Mom."

The series spawned a second generation, "Teen Mom 2" with more former cast members of later seasons of "16 and Pregnant." "Teen Mom 2" just finished its second season. There will also soon be a "Teen Mom 3," MTV announced in February.

Though Maci, Amber, Farrah and Catelynn have yet to comment on their show coming to an end, Maci did retweet a couple fan comments on Twitter:

In a statement, MTV said the original "Teen Mom" cast "will continue to be a part of our MTV family, and we're thankful to these brave young women for sharing their stories and helping to make a positive impact on teen pregnancy prevention."