This has me concerned, but not — well, not ENTIRELY — for the reasons you’d think:

rihanna performing 180410

[Photo: WENN.com]

It’s crazy disco-ugly, and I’m pretty sure it’s giving her a labial wedgie, but it’s biggest sin is this:

The 52nd Annual GRAMMY Awards - Show

Not only is Rihanna’s outfit vaginally questionable, but it’s been DONE. And better. I can’t believe I’m calling this seafoam vulva strap “better,” but you know, it’s all relative. The greatest sin when squeezing sequins onto your crotch is having it look mundane. Rihanna is usually leading the pack of crazies, but that performance outfit feels like refried Gaga with a side of expired Monistat. I expect more. By which I mean, worse. Come on, Rihanna, don’t let that No. 1 seed in this year’s Fug Madness go to your head! Try to blow our minds.