Three of our favorite Brits stepped out for last night's All Saints charity event, channeling decadent glamour in florals and fringe. Sienna Miller showed her affinity for Matthew Williamson in a candy-pink, embellished frock fresh from the designer's Spring '12 runway, while Poppy Delevigne opted for a creamy white textural mini. Pippa Middleton, however, took a different route in a floor-length floral gown. Each of the attendees offers her own spin on feminine eveningwear, but which look gets your vote for most Fab?