They decked the bar out with World Cup paraphernalia for June and July.
Put on special clothes to appear particularly appealing and attractive, overdress, dress up, fig out, fig up, deck up, gussy up [N. Amer], fancy up, trick up, trick out, prink, attire, get up, rig out, tog up, tog out
{f} dress with special clothes in order to look especially attractive and appealing; dress up; prink
If a person or thing is decked out with or in something, they are decorated with it or wearing it, usually for a special occasion. The cab was decked out with multi-coloured lights She had decked him out from head to foot in expensive clothes
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"