The singer took to Instagram on Saturday night to post a series of black and white photos of her in a super short dress with fringe sleeves -- and while her slim physique, smoky eye makeup and new 'do looked incredible, we can't get over those stems.
Someone's clearly been going overboard on leg day at the gym!
Earlier this year, Simpson opened up about her recent weight loss and how she was affected by weight criticism.
"I'm not saying they didn't hurt," she told "Today's" Matt Lauer, referring to all the negative comments. "I'm a woman, I have feelings, hormones. I got emotional about it at times, but if anything I just wanted to be a champion for other women and say 'We can do this.'"
"It wasn't really my priority to please the public and make them feel like I'm supposed to be looking like I did when I was 25," she added. "I don't think that I wasn't still a sex symbol [with the weight]. To my husband, I was still extremely sexy."
How do you think she's lookin' these days? Sound off below!