Rihanna Instagrammed on Aug. 16, 2013 a picture of her new pixie style with mullet in the back. Credit: Courtesy of Rihanna

Is it a rat tail or a mullet? A stylish new hairstyle or a terrible tress mess? Quick-change artist Rihanna, who in the past month alone has rocked three different hairstyles, has Instagrammed her latest cutting-edge look -- and it's a doozy.

The "Stay" singer first showed off her new 'do on Aug. 16, when she shared a picture of her boarding a private jet en route to New York City. In the shot, taken head-on, her cut looks like a conventional pixie, not unlike the one that her peer Beyonce debuted on Aug. 7. In the following photos, though, it becomes apparent that there's nothing conventional about her new hairstyle; shots taken from the back reveal long strands at the base of her neck.

In July, Rihanna rocked an asymmetrical undercut (long on one side, buzzed on the other), but she had it all shorn evenly in August for a curly short 'do that she sported while visiting her native Barbados, where she shared many pics via Instagram of her natural, beachy look (not to mention amazing bikini body).

Tell Us: Do you like Rihanna's latest hairstyle?