This Adorable Ginger-Haired Kid Is Now an MTV Star! Who Is She? (PHOTOS)

Original Teen Mom Maci Bookout tweeted this precious picture of her and her brother Matt when they were just a few years older than baby Bentley. They grow up so quickly, don't they?

Now that Teen Mom is over, Maci is continuing to dominate the MTV scene as the new host of Teen Mom's online after shows. We don't know much about her bro, but if this under-the-radar cutie is anything like his little sis, we like him already.

Were you able to guess Maci's identity? Tell us below and click here to play more Teen Mom "Guess Who?"