She's getting so big!

Miranda Simms — who is married to Teen Mom 2 star Corey Simms — shared a rare photo on Instagram of the married couple's baby daughter, Remington, in her Halloween costume.

miranda simms instagram

"Remington's first Halloween!" she captioned the image.

MORE: See What the 'Teen Mom' Stars Wore For Halloween

The couple wed in 2013 and welcomed their daughter last November. Corey is also the father of his ex-wife, Leah Messer's six-year-old twin daughters, Ali and Aleeah.

Check out more photos of the Teen Mom stars with their kids in the gallery!