Whoa Nellie!

12/3/2007 5:21 PM PST BY TMZ STAFF
The 45-year-old blonde bombshell resurfaced at an AIDS charity event in Hollywood on Saturday, looking flawless.
Alison Arngrim
Besides volunteering for various charities, Alison performs a one-woman show called "Confessions of a Prairie Bitch" and gives private tours of Hollywood for $3,000.