Maci Bookout's baby girl is a night owl.

Pregnant 'Teen Mom' Maci Bookout Shares Photos From Her 'Nightmare' Car Accident

On Friday morning, the longtime Teen Mom star took to Twitter, where she spoke of her baby's nighttime habits, revealing her and Taylor McKinney's unborn child can be quite active while she's trying to sleep.

"I guess bby girl had a 3am yoga class she just couldnt miss #pregprobz," Bookout wrote in the wee hours of the morning.

A 'Teen Mom' Season 5 Premiere Date Has Reportedly Been Set

Bookout revealed she was expecting her second child with McKinney in Dec. 2014, telling In Touch Weekly she and her boyfriend were "very excited" to be starting a family. Bookout's ex-boyfriend, Ryan Edwards, is reportedly excited, as well.

In a Facebook post shared earlier this week, an administrator of Bookout's page revealed his thoughts to fans.

“He is very happy for her baby news and has been completely supportive!” the post read, according to The Ashley's Reality Roundup. “Taking some time off from filming constantly gave them [both a] needed relaxing break and helped them gain perspective.”

When Teen Mom season 5 premieres, fans will be reunited with Bookout, her ex-boyfriend Edwards and the rest of the cast, many of whom are expecting a child. In addition to Bookout's baby news, Lowell welcomed a second child earlier this month, and Gary Shirley's girlfriend is expected to give birth soon.

According to Teen Mom Junkies, Teen Mom season 5 will return to MTV on Feb. 2.

Tags: maci bookout teen mom MTV Reality TV taylor mckinney Ryan Edwards