Playing coy, the "Fashion Police" host didn't mention the ring at all! Instead Kelly captioned the pic "Loving my new manicure thank you #esnails" and posted a second pic which featured rocker dad Ozzy Osbourne's black and gold cross manicure.
But the sparkler took all the attention away from the metallic nails; the round-cut diamond sat in a simple but elegant silver band while Ozzy's gold skull ring competed for the limelight.
The lilac-haired style queen confirmed her engagement to boyfriend Matthew Mosshart last week, who got down on one knee and surprised Kelly during a holiday in the Caribbean.
"I have never felt this close to another human being, ever. We're completely in love," Osbourne told Hello! magazine. "People say we're co-dependent but we just want to be together all the time."
Good luck Kelly and Matthew!
They're not the only celebrity couple who are engaged: