PHOTOS: Bachelorette Winners Ali & Roberto Have A Minnie & Mickey Halloween

They've been low-key for the past few months but Bachelorette Ali Fedotowsky and her groom-to-be Roberto Martinez came out in style Saturday night, and RadarOnline.com has the fun pictures.

The engaged couple joined Bachelor alums Andy Baldwin, Kiptyn Locke and Tenley Molzahn at San Diego's Hard Rock Hotel where -- dressed as Minnie and Mickey Mouse -- they danced and enjoyed Champagne.

Ali and Roberto now call San Diego home.  They've not yet announced a wedding date.

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