Diana: Untouched in the Morning

10/2/2007 1:54 PM PDT BY TMZ STAFF
Natural beauty, Miss Diane Ernestine Earle Ross, 63, sashayed down Bedford Drive in Beverly Hills while shopping for undergarments at Under G's. Just in the nip of time! Diana's letting her gray hair come in -- baby, love it!

Slap on some drawstring pants, a revealing leotard and a zippy jacket -- and as Miss Ross told young stars to do -- she is "keepin' it classy."