Credit: Instagram

Teen Mom's beloved Catelynn Lowell has come a long way since we met her on Season 1 of MTV's hit docu-series 16 and Pregnant in 2009. Nowadays, the soon-to-be Mrs. Tyler Baltierra is all grown up and looking better than ever — and her newfound confidence is truly infectious.

Catelynn, now 20, recently shared a sassy new picture on Instagram, teasing fans about an upcoming photoshoot. "Getting ready for this photoshoot!" she posted on December 8, flashing a peace sign.  

No word yet what the shoot was for — her upcoming wedding? her rumored spin-off? — but we'll keep you posted as the news trickles in. In the meantime, tell us below what you think of Catelynn's sexy, grown-up look!

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