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The Best-Dressed Stars This Week: 5/23/13
![Ok_052213_best dressed alessandra ambrosio.jpg](https://media.okmagazine.com/brand-img/pwwjeQB9H/480x251/2013/05/ok_052213_best-dressed-alessandra-ambrosio.jpg?position=top 480w, https://media.okmagazine.com/brand-img/pwwjeQB9H/640x335/2013/05/ok_052213_best-dressed-alessandra-ambrosio.jpg?position=top 640w, https://media.okmagazine.com/brand-img/pwwjeQB9H/768x402/2013/05/ok_052213_best-dressed-alessandra-ambrosio.jpg?position=top 768w, https://media.okmagazine.com/brand-img/pwwjeQB9H/1024x536/2013/05/ok_052213_best-dressed-alessandra-ambrosio.jpg?position=top 1024w, https://media.okmagazine.com/brand-img/pwwjeQB9H/1280x670/2013/05/ok_052213_best-dressed-alessandra-ambrosio.jpg?position=top 1280w, https://media.okmagazine.com/brand-img/pwwjeQB9H/1440x753/2013/05/ok_052213_best-dressed-alessandra-ambrosio.jpg?position=top 1440w, https://media.okmagazine.com/brand-img/pwwjeQB9H/1600x837/2013/05/ok_052213_best-dressed-alessandra-ambrosio.jpg?position=top 1600w, https://media.okmagazine.com/brand-img/pwwjeQB9H/2160x1130/2013/05/ok_052213_best-dressed-alessandra-ambrosio.jpg?position=top 2160w)
Alessandra Ambrosio kept it sexy in Cavalli in Cannes, while Emma Roberts partied it up in Camilla and Marc in the big apple—see who else topped our most stylish star list this week!
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1. Alessandra Ambrosio
![Ok_052213_best dressed alessandra ambrosio_ _2.jpg](https://media.okmagazine.com/brand-img/HFaPR7pJX/0x0/2013/05/ok_052213_best-dressed-alessandra-ambrosio_-_2.jpg)
In Roberto Cavalli at his Yacht Party in Cannes.
2. Emma Roberts
![Ok_052213_best dressed emma roberts_ _1.jpg](https://media.okmagazine.com/brand-img/qFzijkWeR/0x0/2013/05/ok_052213_best-dressed-emma-roberts_-_1.jpg)
Wearing Camilla and Marc during her appearance at Glamour's presentation of These Girls at Joe's Pub in New York City.
3. Heather Graham
![Ok_052213_best dressed heather graham_ _1.jpg](https://media.okmagazine.com/brand-img/6sItmqA2V/0x0/2013/05/ok_052213_best-dressed-heather-graham_-_1.jpg)
In Herve L. Leroux at The Hangover III LA premiere.
4. Jamie Chung
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![Ok_052213_best dressed jamie chung_ _1.jpg](https://media.okmagazine.com/brand-img/qO_3nkfMs/0x0/2013/05/ok_052213_best-dressed-jamie-chung_-_1.jpg)
Wearing Armani at The Hangover III LA premiere.
5. Lucy Hale
![Ok_052213_best dressed lucy hale_ _1.jpg](https://media.okmagazine.com/brand-img/pqvBxjF5p/0x0/2013/05/ok_052213_best-dressed-lucy-hale_-_1.jpg)
In a Halston bronze cut-out gown and Stuart Weitzman Metallic Pink Vixen Shoes at the 38th Annual Gracie Gala Awards in Beverly Hills, CA.
6. Rosario Dawson
![Ok_052213_best dressed rosario dawson_ _1.jpg](https://media.okmagazine.com/brand-img/D7T1J5t3J/0x0/2013/05/ok_052213_best-dressed-rosario-dawson_-_1.jpg)
Out and about in Cannes, Rosario rocked a pink Elie Saab peplum dress.
7. Jessica Alba
![Ok_052213_best dressed jessica alba_ _1.jpg](https://media.okmagazine.com/brand-img/EmvlVZNKF/0x0/2013/05/ok_052213_best-dressed-jessica-alba_-_1.jpg)
In Zuhair Murad at the Social Star Awards.