put on showy makeup / put on heavy makeup / paint *one's face flashily with makeup / make up *one's face dramatically
せいそうする
seisousuru
盛装する JN1;JVE
be dressed up / be finely dressed / being dressed in *one's best / attire *oneself in rich clothes / be in gala dress / be dressed in *one's best / being finely dressed / being dressed up