dress up

put on special clothes to appear particularly appealing and attractive; "She never dresses up, even when she goes to the opera"; "The young girls were all fancied up for the party"

make something appear superficially attractive; "The researcher tried to dress up the uninteresting data"; "Don't try to dress up the unpleasant truth"

put a caparison on; "caparison the horses for the festive occasion"

dress in a costume; "We dressed up for Halloween as pumpkins"

dress in a certain manner; "She dresses in the latest Paris fashion"; "he dressed up in a suit and tie"