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Washington, D.C. was the most popular place to be this weekend! Some of the biggest names in Hollywood jetted to the nation’s capital to catch a glimpse of President Obama for the 98th Annual White House Correspondents’ Dinner, and the oodles of cocktail parties that came along with it. After garnering plenty of laughs as host of the event—where Reese Witherspoon (in Monique Lhuillier) mingled with New York Senator Kirsten Gillibrand—comedian Jimmy Kimmel ventured over to the French Ambassador’s house for the Bloomberg andVanity Fair reception, along with Sofia Vergara (in David Meister), Kate Hudson (in Jenny Packham), George Clooney, and Kerry Washington (in Calvin Klein). “I thought the POTUS [President of the United States] was hilarious,” Tweeted Washington. “It was a wonderful weekend.” See more stars at the weekend’s hottest events—D.C. and beyond—in the gallery.

Kate Hudson is the new face of Ann Taylor, and InStyle.com exclusively caught up with the star on the set of her new campaign! “I brought my son and my breasts,” she joked when she arrived at the shoot in fringed Uggs and a Stella McCartney jumpsuit, referring to the fact that she was still breastfeeding her new—and teething—son Bingham. Her newborn napped in the bedroom of the private Pasadena estate where the shoot took place while she changed into Ann Taylor’s spring collection, including lace dresses, bright blouses and cardigans, and colorful bangles, belts and scarves with pops of neon. “If I am going to be affiliated with something, the most important thing to me is what it stands for,” the actress told us after being snapped by celebrity photographer Tom Munro. “I’m a working mom. I don’t have a lot of time on my hands. Ann Taylor is about making sure women have one place to go where they can shop and still feel chic.” She went home with her collection favorite, a tan motorcycle jacket she wore out the door. “We didn’t even get to wear that for the shoot,” she laughed. See behind-the-scenes photos of her campaign for Ann Taylor, and read more of our exclusive interview in the gallery.

— Kwala Mandel