Pinks, reds and/or ruffles seemed to be requirements at this week's events. Unabashed femininity ruled everywhere from Valentino's New York couture show where Sofia Coppola, Emma Roberts and Olivia Munn stunned in the house's feminine designs; to Hollywood, where Reese Witherspoon seemed to be channeling Elle Woods in hot pink Balenciaga; to the UK, where Keira Knightley and Laura Carmichael looked like the coolest girly girls in Simone Rocha and Jonathan Saunders, respectively. Oh and then there was that time Rihanna wore red Zac Posen and looked breathtakingly glamorous. Honestly, how does she keep doing it?
Click through for all that and the rest of this week's best dressed.