Our PicksBest and Worst Dressed of the WeekThe Fashion Beast Team03.28.14Our PicksBest and Worst Dressed of the WeekRachel Zoes rocks Valentino, Emma Watson shows off sharp tailoring in Saint Laurent, and Lady Gaga channels her inner unicorn. Plus, more best and worst dressed of the week.The Fashion Beast Team03.28.14 9:45 AM ETGetty Rachel Zoes rocks Valentino, Emma Watson shows off sharp tailoring in Saint Laurent, and Lady Gaga channels her inner unicorn. Plus, more best and worst dressed of the week. Gustavo Caballero/GettyBest Dressed: Anne HathawayFor the Miami premiere of her upcoming animated film Rio 2 on March 21, Anne Hathaway chose a bright, bold purple-and-red Roksanda Illincic dress and lavender platform Charlotte Olympia heels. Jamie McCarthy/GettyBest Dressed: Rachel ZoeTo celebrate the launch of her latest book, Living In Style: Inspiration and Advice for Everyday Glamour, at Tiffany & Co. in NYC on March 24, celebrity stylist and TV personality Rachel Zoe looked elegant in a black, multi-tiered lace and leather gown by Valentino. Donato Sardella/WireImageBest Dressed: Emmy RossumEmmy Rossum celebrated the launch of Christian Louboutin's 'Passage' handbag in Los Angeles on March 25, sporting a black, white, and blue sundress with bright blue pointed-toe snakeskin heels and a black leather "Khepira" clutch, both by the designer. Clint Brewer/Splash NewsBest Dressed: Kim KardashianSpotted while out in Beverly Hills, Kim Kardashian donned a red Calvin Klein long-sleeve knit crop top and coordinating pencil skirt with Tom Ford sandals. Ray Tamarra/WireImageBest Dressed: Emma WatsonEmma Watson arrived at The Late Show with David Letterman in a perfectly tailored, menswear-inspired black suit and crisp white button-down by Saint Laurent. She accessorized with a Reese Hudson clutch, black Christian Louboutin slingback heels, and rings by Sabine G. Donato Sardella/WireImageBest Dressed: Zoey DeutchActress Zoey Deutch looked chic at the Sandro Paris event in L.A. on March 20 wearing a short-sleeved navy blue lace frock with a white Peter Pan collar by the designer. Frederick M. Brown/GettyBest Dressed: Mindy KalingMindy Kaling looked chic in an emerald green jacquard pencil skirt and slight crop top from Topshop, black Christian Louboutin heels, and jewelry by Jennifer Meyer at Paleyfest 2014 on March 25 in Hollywood. NCP/Star MaxWorst Dressed: Lady GagaMother Monster stepped out in New York City on March 24 channeling her inner-unicorn. Gaga donned a bright pink, glittery suit and coordinating hat by London designer Christian Cowan-Sanluis, but her ultimate accessory was her flowing ponytail that closely resembled an animal tail. Michael Buckner/GettyWorst Dressed: Shailene WoodleyShailene Woodley's attempt at androgynous dressing was unfortunately a failure. On March 27 in Las Vegas, the actress's tan trousers and matching vest was too "grandma" for her own good.