Credit: Twitter

To all the naysayers who didn't believe that Leah Messer Calvert's daughter would be able to walk on her own, we have only one thing to say to you: You were wrong!

Check out this picture of 3-year-old Aliannah chilling on her front porch, just barely holding on to a chair for support. Ali looks happy, healthy, and completely at ease as Leah snaps a picture to preserve the precious moment.

"My Beautiful Aliannah Hope," the Teen Mom star tweeted.

When Ali was just a baby, she was diagnosed with a mysterious developmental disorder, and doctors weren't sure if she'd ever be able to walk on her own. But Ali is making major strides — literally! — and even managing to keep up with her twin sister, Aleeah. Check out this video of Ali practically sprinting past her.

Leah and her hubby Jeremy must be so proud!


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