McKayla Maroney kept it racy on Halloween.

McKayla Maroney Flaunts Her Chest In Previous Instagram Selfie

Over the weekend, the Olympic gymnast added photos of her costume where she went as a "dog on acid." But she wrote in the caption that everyone thought she was a bunny.

This is probably an honest mistake since Maroney wore long ears although her colorful top added a trippy effect. In fact, her top was super low-cut as she let some chest skin show.

 when ur suppose to be a dog on acid for halloween but everyone mistakes u for a bunny. #lastminutecostume

A photo posted by McKayla Maroney (@mckaylamaroney) on Nov 1, 2015 at 5:37am PST

McKayla Maroney Sticks Out Her Tongue On Instagram

Overall, it looks like the gymnast had a great Halloween as she showed off her colorful makeup and little dog collar.

hope everyone had an amazing weekend sending love x (refer to previous picture for costume description) #eyebrowstoolit A photo posted by McKayla Maroney (@mckaylamaroney) on Nov 1, 2015 at 5:38pm PST

Sadly though, Maroney got pretty bummed out that Halloween had to end yet again this year. In another photo, she pointed out that she feels post-Halloween depression as she kept part of her costume on.

when u get home and catch a severely heavy case of post halloween depression. #goodbyeoctober A photo posted by McKayla Maroney (@mckaylamaroney) on Nov 1, 2015 at 8:04pm PST

In a previous snapshot, Maroney mentioned that one of her costume options was going to be a "PG13 gymnast." This made sense as she wore a white one-piece outfit that bared her long and slender legs.

last minute halloween shopping.. #whatsnew can i just be a PG13 gymnast and call it a day A photo posted by McKayla Maroney (@mckaylamaroney) on Oct 29, 2015 at 7:16pm PDT