Denshi Jisho — Online Japanese dictionary

恰好付ける かっこつける to affect a stylish air; to try to look good; to show off
Irregular kana usage, Ichidan verb, Usually written using kana alone 
恰好付ける かっこうつける to affect a stylish air; to try to look good; to show off
Ichidan verb, Usually written using kana alone 

You can also

Look up kanji details for 恰好付ける.

Try a Yahoo Jisho search for 恰好付ける .
Try a Goo Jisho search for 恰好付ける .
Try a Google search for 恰好付ける .