1. Olivia Wilde -- Olivia who now? We're guessing since Maxim put about 93 painfully obvious choices on its list, it had to throw in a spoiler for No. 1. Olivia Wilde stars in the show "House" as a terminally ill doctor who dabbles in drugs and casual sex (well I guess that clinched it)... her gaunt look isn't exactly what we'd dub "No. 1 Hot Girl", but it's not our list. Be on the lookout for Wonderwall's "Hottest Actresses Over the Age of 70" list coming out next week. We don't want to spoil anything, but Betty White is a ringer.