via wireimage

CGG was hanging out backstage at the H&M Artist Gift Lounge at New York radio station Z100's Jingle Ball 2008. And guess who we ran into? The Hills hunk Brody Jenner!

Dude was pedalling away on the new Duracell Snowmobike. Check it: The new eco-gizmo is being ridden by stars all over the country, and their stored cardio energy will be used to power up the "2009" sign that will alight when the Times Square ball drops this New Year's Eve. What a nice guy, that Brody Jenner, helping Manhattan save bucks on its electricity bill while conserving energy!

But there's more! Brody also told CGG all about his new GF, Jayde Nicole, even proudly reminding us that she's Playboy's 2008 Playmate of the Year. "Love her to death!" he said.

Her cause? Locks of Love, which asks for donations of a minimum of 10 inches of hair to weave into wigs for cancer and alopecia patients who are under 18. Brody says he's inspired by Jayde, who's out to convince all of her Playmate friends to go short in the name of charity.

So will he grow his hair out and then cut it in solidarity? He told us "I want to!" but "everybody's been telling me, 'No, Brody, No!"

CGG says: "Yes, Brody, yes!" Afterall, Jayde may need his help, as she could have trouble finding volunteers among the Playmates: Locks of Love stipulates that hair that has been bleached cannot be accepted.

For more on Mr. Brody (who can soon be seen starring in his new reality show, Bromance, which debuts December 29 on MTV) check out our exclusive interview!