katewilliamreception2011.jpgJohn Stillwell

The Duke and Duchess of Cambridge (aka newlyweds Prince William and Catherine Middleton) slipped into something just a tad more demure for their royal wedding reception, which the Queen threw for them at Buckingham Palace following their Westminster Abbey nuptials.

Once again donning a dress designed by Sarah Burton for Alexander McQueen, Kate donned a white strapless satin dress with diamante embroidering around her tiny waist, topped off with an angora cardigan.

As for Wills, he changed out of his Irish Guard uniform and into a classic monkey suit for the "intimate" 650-person reception.

The party started at 7:30 pm local time and could carry on all night with drinking, dancing and ... drunk food!

See what late-night snack Prince Harry has planned for the party-goers ... after the jump!