Is Eva going Gaga? MTV host's 13 costumes changes including ham outfit

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"Gaga couldn't be here tonight, but she left this dress in the refrigerator backstage for me," joked the actress

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Eva as seen on her Twitter page before the ceremony, getting a little help with the mammoth task ahead

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Another memorable moment came when the Latina lovely was joined on stage by Katy Perry

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The new Mrs Brand ripped off her strapless midnight blue number to reveal a gliterry corset

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...and seemed very pleased with the results

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In Vegas showgirl mode to present one of the awards

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The Desperate Housewife set the tone for the evening by arriving in this brief affair, which showed off her sexy pins to maximum advantage

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She donned a mini-dress in the colours of the Spanish national football team to sing Viva España - congratulating them on their World Cup victory

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Eva wasn't the only one causing a stir with her attire

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Eva gives the audience a frill in this sheer black and white floor-length affair

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This sassy criss-cross design is by Pucci

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One of the hair changes, rather ingeniously, included a fringe style

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Wearing a Gianfranco Ferre black and white ruffled top with black high-waisted pant

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She clearly had a ball, later tweeting: "Thank u Madrid! I love Espana!! MTV EMA's you rocked! Had so much fun! Back to work now on DH!"

Is Eva going Gaga? MTV host's 13 costumes changes include ham outfit