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    Prince Harry Who? Newly Single Cressida Bonas Flashes Major Side Boob at London Event

    Cressida Bonas, Sideboob David M. Benett/Getty Images

    How's this for "boring"?

    It looks like Cressida Bonas is doing just fine post-Prince Harry. The blond bombshell, who recently split from the young royal, was spotted flaunting some major sex appeal at a London art event tonight.

    Bonas attended the Art Antiques London Gala Evening in aid of Children In Crisis at Kensington Gardens Tuesday while wearing a black and light gray jumpsuit that showed off her bare back and—the especially sexy part—a gracious amount of side boob!

    Cressy completed the look by keeping her makeup to a minimal glow and letting her light tresses fall beside her face.

    LOOK: Meanwhile, Prince Harry hangs out with a goat

    Cressida Bonas, Sideboob David M. Benett/Getty Images

    A source close to both Cressida and Harry told E! News exclusively their breakup is definitely final, despite there being rumors of a reconciliation.

    The royal insider said that the 29-year-old was heartbroken when Harry suddenly called off their romance in April with barely any discussion.

    "Harry thought she was boring toward the end," the source dished. "She didn't like to go out, party and have fun as often as he does, and they weren't matched enough for him to commit. Cress is beautiful, intelligent and fun—but she's no raver like Harry still enjoys. Harry just wasn't ready to settle down and head down the route of getting serious with his royal commitments. It's going to take a special girl to tame him."

    Well, it looks like Cressy is going to be fairly busy herself. E! News confirmed that the royal's ex-girlfriend has just been signed on to star alongside Cara Delevingne and Daisy Lowe in Harvey Weinstein's latest soon-to-be hit, Tulip Fever.

    PHOTOS: Prince Harry and Cressy's royal romance!