Hadith.2618 - Zurara narrated from one of the Imams (as), who said
I asked him about what is disliked for a Muhrim to wear.
Imam (as) said: "He may wear any garment except a single garment worn like a tunic (tadarru’)."
Man Lā Yaḥḍuruh al-Faqīh #1049"Do not wear a garment with buttons while you are in the state of Ihram unless you wear it inside out. Do not wear a garment that is worn...