Princess Mary dazzles in bold strapless gown at the Grand Ball

Princess Mary has never failed to turn heads and she's done it yet again after stepping out in another show-stopping creation.

The 44-year-old is currently on a royal tour of Washington with her husband, Crown Prince Frederik, and last night she dazzled when she arrived at the Smithsonian's Arts and Industry building for a Gala Ball.

RELATED: Crown Princess Mary stuns in Alex Perry on the cover of Vogue Australia

The floor-length, multicolored, asymmetrical gown featured a strapless, sweetheart top and a swooping side train, which all added to the dramatics of the stunning piece.

Along with Prince Frederick, they looked like the ultimate power couple as they celebrated the U.S. and Denmark Trade Mission in Washington.

Earlier in the day, Princess Mary was all smiles when she greeted a young girl at the Chamber of Commerce in Washington.

The Australian-born royal was dressed as elegantly as ever in a cream, ankle-length coat, which was adorned with speckles of colourful flowers.

She kept her hair in a sophisticated chignon and matched her outfit with some eye-popping jewels.

The couple then visited The United States Department of Health and Human Services’ Health seminar and later a seminar on the 'Evolving U.S. Food Policy and Emerging Consumer Trends'.

Mary and Frederik are set to spend four days in the States as part of their royal tour, where they will spend time in Washington, Boston and Masachuettes before returning to Denmark.

Want more celebrity, entertainment and lifestyle news? Follow Be on Facebook,Twitter, Pinterest, Tumblr and Instagram