It's hard to imagine a Hollywood A-lister like Reese Witherspoon getting star-struck over meeting anyone, but that's just what happened when she met Kate Middleton at a fundraiser last summer.

Reese was so excited that she changed her outfit half a dozen times beforehand. "I'm meeting a princess," she told Ellen DeGeneres in an interview set to air today. "You have to be wearing the right outfit and the whole thing."

Find out more about Reese's encounter with the princess after the jump!

The Duke & Duchess of Cambridge are showing off their charitable ways once again! The royal couple, Prince William and Kate Middleton, attended the UK premiere of War Horse to benefit the Foundation of Prince William & Prince Harry.

Once again, the Duchess appeared to look flawless in a black lace gown (with white underlining to cover up, of course!) and her hair in loose, simple curls as she walked the red carpet with her husband, who matched her in a black and white tux.

There are two different kinds of celebs out there – one’s that hate PDA and one’s that love it! PDA (public display of affection) can be noticed while you’re walking down the street, sitting in a movie theater, and yes, even on the red carpet.

After taking a look back 2011, we realized couples showed their loved one all sorts of affection. Whether it was a kiss, holding hands, a longing gaze, or even just a tender touch, it was EVERYWHERE! Now take a longing gaze at some of Hollywire’s hottest PDA pictures from 2011!