January Jones and Dominic Cooper stepped out for a dinner hosted by Donatella Versace at The Connaught in London last week. January rocked a daring backless dress and wore her hair in a bun as she mingled with the designer, Dominic, and British celebs like Alexa Chung at the intimate event, which raised funds for Central St. Martins. The actress is in the midst of a hiatus from her TV series, Mad Men, but she'll soon kick off a new, film-heavy phase in her career. She co-stars in the upcoming X-Men: First Class, and her thriller Unknown hits the big screen next year.
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