dress up

verbs

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"
see also
antonym
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"