Keith Urban Ditches Wedding Ring in First Sighting Since Divorce Bombshell

Keith Urban just surfaced for the first time since that Nicole Kidman divorce bombshell dropped — and yep, the ring’s already MIA!

Peep the pics — Keith touched down Thursday in Hershey, PA on a private jet, headed straight for Giant Center, where he’s performing this evening on tour … so work mode’s clearly still on, even while he’s dealing with the divorce drama.

Keith stepped off the jet rocking a black cap and shades, bag in hand with his ringless wedding finger — making it pretty loud and clear: he and Nicole are officially done.

Clearly, Keith’s throwing himself into work … especially since sources close to the couple told TMZ they think the 57-year-old rocker’s going through a full-blown midlife crisis.

Insiders also told us they believe Keith’s already moved on with another woman… and a clip of him pointing and singing to his guitarist Maggie Baugh from his April Vegas performance is stirring the pot — although nothing has been proven.