Rosie Huntington-Whiteley makes the switch to Spring an effortless one in a breezy white blouse and Isabel Marant printed pants. It's not just the statement-worthy bottoms we love; this combo makes transitioning from day to night seamless and ultrasophisticated. Her silhouettes are laid-back enough for any daytime routine (yes, even running errands), while her luxe Saint Laurent duffel and a pair of nude sandals elevate the outfit so it's also a viable option for any evening out. And, while we may need an extra layer to fight the chill in the Northeast, Rosie's ensemble would look just as chic with a blazer or anorak thrown over top. But if you're lucky enough to call a warmer climate home, you need little else but the essentials below to channel her latest bit of street style.