Pippa Middleton Fashion Face-Off

Britney Spears and Pippa Middleton both look pretty adorable in plaid shirts.

Interestingly, both donned them in London, England. The singer was in town last month for an event at Radio 1 studios, while Pip ... lives and works there. Pippa Middleton pictures from her daily commutes have become a staple.

It was an unexpected surprise to see either dressed in such a way - Britney in a short-sleeve number and Pip in a Burberry, black and red long sleeved one.

Who's the prettiest in plaid? Vote in our Fashion Face-Off below!

Pippa Middleton stepped out in her sexiest look yet Saturday, stunning onlookers in a red satin "Begonia" dress with a plunging neckline from the Temperley London fall line, accessorized with gold heels and a matching clutch.

The sister of Kate Middleton, who was seen at the designer's London Fashion Week show two weeks ago, was escorted by boyfriend Alex Loudon.

The occasion was a charity event, the Boodles Boxing Ball, that drew several British royals and celebs including ... Prince Harry's ex Chelsy Davy!

Which of the two dressed best, Chelsy or Pippa? Vote in our Fashion Face-Off below!

Pippa Middleton, the gorgeous 28-year-old little sister of Kate Middleton, still works at her parents' event planning company Party Pieces in London, England.

Given her celebrity status, we get to see how stylish she is on the way to and from the office every day. Witness a couple of her looks from this week below.

Whether it's a swan print shirt dress, navy blue sweater, red flats and a red shoulder bag, or a short, floral red skirt, Pippa sure has a great sense of fashion!

Which ensemble was best? Vote in THG's Fashion Face-Off and tell us!

It's a Fashion Face-Off of epic, international proportions.

The always-stylish Pippa Middleton stepped out in rainy London in her black trench coat yesterday, making us wonder how a couple of Hollywood mainstays would each wear a similar piece with their unique twists. Can SoCal compete with the UK's finest?

See below, as we contrast the lovely Pippa with Kourtney Kardashian and Britney Spears pictures from earlier this year. Who wore the trench best? Vote!

Kate vs. Pippa. Duchess of Cambridge vs. Britain's Most Eligible Bachelorette. When the Middleton siblings clash in a style showdown, the results will be ...

Well, your votes will decide that. But there will be a fashionable winner. In our first matchup of the sisters, Kate trounced Pippa. Will this be different?

Yesterday, Pippa Middleton turned heads in a blue-and-white wrap dress, paired with white peep-toe wedges and her favorite gray leather Modalu bag.

Contrast that with a recent blue ensemble worn by Kate Middleton in one of her final appearances before April's Royal Wedding. Who dressed best? Vote: