Watch Pregnant Catelynn Lowell & Tyler Baltierra Tell Novalee About The Baby!

The new big sister!

In a sneak peek clip for Teen Mom OG, Catelynn Lowell and her daughter, Novalee, makes cupcakes for a very, very exciting reason! The reality star and her husband, Tyler Baltierra, reveal to their daughter that she is about to have a little brother or sister!

Watch the adorable moment below! Teen Mom OG premieres October 1st at 9pm ET, only on MTV!