Meaning: 自分の気持ちを包み隠さず本音で話す、感情をあらわにする
For Example:
‣ I am a person that wears my heart on my sleeve because I don't like to hide who I am.
私はほんまの自分を隠すんは好かんけん、本音でしゃべるで。
‣ People who wear their heart on their sleeves are admirable.
自分に正直な人は立派です。
Synonym:
express oneself
honest