It’s guessing time, y’all! Can you guess which 49-year-old British pop star put her hot bod on display in this eye-popping sexy selfie?! Here are a few clues to get ya started …

She and her girl group stormed onto the music scene in the mid-’90s, and her friend Victoria Beckham designed her wedding dress. If you’re still unsure, she’ll “tell you what you want, what you really, really want!”