Credit: Instagram Photo: Kailyn Lowry Shows Off a Baby Photo — Flashback!

Aww. Teen Mom 2’s Kailyn Lowry posted a flashback photo of herself on Instagram and we can’t help but smile at the adorable pic.

“Baby Kail!” she Instagrammed. The pic features baby Kailyn in a decorative white dress with a yellow necklace around her neck. Who knew this little girl would grow up to be a reality TV star? We bet she didn’t!

We can definitely see where baby Isaac gets his cute genes from — he totally resembles his mother in this candid photo.

Now, 20-year-old Kailyn is all grown up and prepping for her (second) wedding to hubby Javi Marroquin, while managing school, adjusting to life as a military wife, and taking care of her toddler Isaac. My, how time flies.

Kailyn’s recently taken another photo wearing a decorative white frock. The bride-to-be (again) modeled a wedding gown made of paper for Essere Magazine. This isn’t Kailyn’s first time wearing a wedding dress, however. The Teen Mom 2 star was married to her sweetheart Javi at the end of 2012, and will be wearing an entirely new dress for the couple’s Fall 2013 ceremony.

Do you think that baby Kailyn is adorable? Let us know, below!