What it means

1. verb make something appear superficially attractive
   “The researcher tried to dress up the uninteresting data”
2. verb put on special clothes to appear particularly appealing and attractive
   “She never dresses up, even when she goes to the opera”
3. verb dress in a certain manner
   “She dresses in the latest Paris fashion”
4. verb dress in a costume
   “We dressed up for Halloween as pumpkins”
5. verb put a caparison on
   “caparison the horses for the festive occasion”