Answer: dollup

AnswerCrossword Clue
DOLLUPDress to the nines
DOLLUPDress showily: Slang.
DOLLUPDress with care: Slang.
DOLLUPPut on one's best bib and tucker.
DOLLUPGet dressed in Sunday best
DOLLUPDress all fancily
DOLLUPDress extravagantly