Twinning! Fans were doing a double take after former Teen Mom star Mackenzie McKee posted a photo of herself beside Leah Messer on June 27, since many started noticing their uncanny resemblance. The blonde-haired, blue-eyed beauties were both rocking voluminous curls in their fierce selfie together, with soft smokey makeup to match. It wasn't long until commenters started chatting about how much they looked like "sisters," and we can totally see it. Watch the video above to see the lookalike pic of Leah and Mackenzie!

"Y’all could be sisters ?," one fan noted. "You look like sisters! Stunning ??," another said and clearly, several more were noticing their similarties as well, writing: "Holy sh—–t! You guys look like twins! ❤ beautiful girls." While some fans couldn't stop focusing on their resemblance to each other, others started taking notice of where the new photo was taken. Mackenzie and Leah were dressed to impress and sitting in what appeared to be the set of a Teen Mom after show, which got the rumor mill going into overdrive!

"She has been filming since the special of her mom," a fan theorized. "I think she is replacing one of the girls not sure who yet." A few wondered if Mackenzie was taking Jenelle Evans' place, but they weren't certain about it. "Well we know she is not taking Briana [DeJesus] place because Briana signed on again for another season because they upped her raise," another noted. There was even one person who wasn't convinced Mackenzie was making a triumphant return, commenting: "She is practically too good to return. She doesn't have baby daddy drama & she is mentally healthy. MTV wants trash. Sorry. I had to say it!!"

However, there have been reports that Mackenzie, who is originally from Teen Mom 3, is replacing Farrah Abraham after she got the boot. Mackenzie will supposedly be joining Amber Portwood, Catelynn Lowell, and Maci Bookout for Teen Mom OG's eighth season, according to TMZ. Some fans are now more convinced than ever that Mackenzie is coming back, especially after rumors that she could be replacing Farrah on OG, and now her being around other Teen Mom stars on a Teen Mom after show is only giving them more hope!

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