Supposedly Nashville is crawling with celebrities. Rob spotted Carrie Underwood at the mall, going into Louis Vuitton. My friend Brad regularly ends up on the treadmill next to Vince Gill at the YMCA. I imagine I’ve seen all kinds of country music stars around town, but I haven’t recognized a single celebrity yet.

Until last Saturday.

I’m sitting on my mat at Sanctuary for Yoga in Green Hills, getting ready to enjoy one of my last classes there. I’m stretching out a bit, doing an Easy Seated Twist, when I look over my right shoulder and see a girl standing in the doorway.

“Huh,” I think to myself. “That girl looks like Nicole Kidman.”

And as I twist again and glance over my left shoulder, it all comes flooding to me … really tall and thin, pregnant, married to Keith Urban, lives in Nashville … light bulb!

“That IS Nicole Kidman!”

My very first celebrity sighting! Or at least, my very first sighting in which the recognition of the celebrity was exciting. I was kind of oblivious when I was in LA.

I have no idea why Nicole Kidman would deign to attend a group yoga class, on a Saturday morning no less. SELF Magazine did a piece last fall about LeAnn Rimes practicing yoga at this studio, but that was private lessons.

But all the yogis in class all handled it pretty well. I caught a few bits of conversation about someone seeing her loading up at the salad bar at Whole Foods last week, but once class started, we were all business. Of course I stared at her during every single Downward Facing Dog, but at least I didn’t start humming “Come What May.”

I do have to say that seeing her up close actually didn’t make me feel like a stubby little troll. In fact, it was her too-yellow frizzy hair that was a little troll-like. She is obviously a very attractive woman, but mostly, she just has a recognizable face. Otherwise she blended right in with all the other wealthy-looking 40-something ladies of leisure in my class, down to the big ring on the gnarled hands that are a good 20 years older than her shiny, taut face.

Let me tell you, that porcelain skin you see on TV? It looks like Saran Wrap in real life.

I’m not gonna lie. I really almost went up to her after class to ask about those rumors that Tom Cruise is really gay and paid her and is now paying Katie Holmes to be part of his entourage and to help both their careers by having highly public romances immediately before the movie in which they co-starred was released. I mean, that has to be true, right? And what about Scientology?