"Teen Mom 2" star Kailyn Lowry gave fans a first glimpse of "Baby Lo" this week.
"Baby Lo," she captioned the snapshot for her 3.1 million followers, adding a blue heart emoji.
Lowry has yet to officially name her newest addition. She is already parent to 7-year-old son Isaac with ex-boyfriend Jo Rivera and 3-year-old son Lincoln with ex-husband Javi Marroquin.
"Still trying to pick one," the star tweeted Monday. "I think I'm overthinking it."
"Isaac said the name Murphy was 'eh, okay... for a dog,' and also suggested Francis," she added Wednesday. "linc is still adamant about naming baby Lo 'climber.'"Lowry confirmed Baby Lo's birth Saturday after Radar Online reported she welcomed her son at 3 a.m.
She shares her son with Chris Lopez, but said in a since-deleted post in April that she will be raising the child alone.
Lowry came to fame on the MTV series "16 & Pregnant" before starring on "Teen Mom 2." The show airs Mondays, and co-stars Jenelle Evans, Chelsea Houska, Leah Messer and Briana DeJesus.