Definition of ponce something up in US English:

ponce something up

phrasal verb

British
informal
  • Make overly elaborate and unnecessary changes to something in an attempt to improve it.

    • ‘NSW's great iconic pubs are all in the bush, the city ones having been long since ponced up.’
    • ‘I was expecting it to be all ponced up, but no, the Third World is staging a vigorous comeback.’