Pippa Middleton has been a hot commodity since she (arguably) upstaged elder sister Kate at the much-publicized British royal wedding earlier this year. In terms of attractiveness, it’s a close call between these two socialite siblings, but there’s just something about Pippa that keeps us coming back for more. Maybe it’s the fact that she’s still single, or it could just be that adorable smile. We’ll let you decide for yourself. Click through to see the gallery.