This isn't the first time Winter has paraded her butt on Instagram. In fact, ET caught up with the Modern Family star just last month, where she defended her racy posts.
"Everybody is so hyped up on the fact that I post photos where my butt's out. It's a butt. Everyone has a butt," she explained. "I don't think it's crazy."
"It's like, 'Let me live! I'm enjoying my life, you're enjoying your life, you should be posting your butt if you like it, too!'" she added. "I'm not going to fight with someone on my Instagram that tells me they don't like my outfit or I should put my butt away. I'm sorry you think I should put my butt away, but just unfollow me."