Jennie Garth on August 14, 2012 in Los Angeles, California. Credit: GVK/

Nice arm candy, Jennie!

On Tuesday, Jennie Garth was photographed taking a stroll in L.A. holding hands with a tall, handsome mystery man: Photographer Noah Abrams, whom Garth is now dating, two sources confirm to Us Weekly.

The reality star and Beverly Hills, 90210 actress, 40, rocketed back into the spotlight last week when she unveiled her seriously slimmed-down, sexy new bod. It's a stunning bounce back for the 5-foot-5 Little Bit Country star, who's been dealing with her painful divorce from Twilight actor Peter Facinelli after 11 years (and three daughters) together.

"I've been certainly going through a transitional time in my life," she explained in a recent TV interview of her startling new look.

As for new hunk Abrams? "She's been going on dates," one insider says of Garth, who had a flirty dinner with HGTV star Antonio Ballatore in Las Vegas back in May. "She's not looking to get into anything too serious too fast."

Adds another friend: "She's happier than ever!"

For much more on Garth's amazing body makeover -- 20 pounds and two dress sizes in 3 months! -- pick up the new Us Weekly, on stands Friday.