United Kingdom, Feb. 12 -- Bunnie Xo has been wowed by Jelly Roll's 300-lb. weight loss.

The 41-year-old star has gone through a dramatic physical transformation in recent years, and Bunnie has joked that she's been "drooling" over his new figure.

Speaking to People, Bunnie shared: "We're watching a grown man live his life to the fullest for the first time.

"He doesn't have that extra weight on him, and he is literally just the happiest little bumblebee that is just flying through the universe right now, and he's doing everything that he hasn't gotten to do, and he's kicking ass. I can't wait to see how it's going to be in another 10 years, especially now with his newfound freedom.

"He was beautiful before, but now I catch myself droo...