A photo posted by a fan on Twitter reignites rumors that Taylor Swift is pregnant.

Last week, the 27-year-old singer hosted a "Reputation" secret session in Los Angeles, where she invited some of the most loyal Swifties to attend. Fans got to hear the rest of her upcoming album, which includes the already released singles "Look What You Made Me Do," "...Ready for It?" and "Gorgeous."

It was the perfect chance for fans to get to know the pop singer, and of course, take a lot of pictures. Many such photos soon circulated on social media, but there was one in particular that caught everyone's attention.

In a photo posted by @gingerswift13, Swift is wearing what looks like a loose-fitting black sweater while holding her hip. The photo does look like the singer is sporting a baby bump. But the angle, as well as both of the women's poses, could have made that illusion.

As @gingerswift13 captioned in a later post, "Dear Taylor, sorry my boob apparently makes you look pregnant."

Many fans have since re-tweeted the photo, making the issue blow up.

Other fans who were also at the exclusive listening party were quick to defend their idol. One even said that the singer "drank a glass of wine" in front of her. 

Another guest at the secret session said Swift just "gained weight from the gym and eating better."

This, however, is not the first time the "Blank Space" singer has been rumored to have a bun in the oven. On Oct. 12, she surprised a fan at her house. The touching scene was posted on Instagram, but some fans were more concerned about what looked like a baby bump from the angle the video was taken. In the clip, Swift was also wearing a loose sweater.