Muhrim (the one in Ihram) has a special dress. Get to know about it.
Narrated Ibn ‘Umar:
A person asked Allah’s Apostle, “What should a Muhrim wear?” He replied, “He should not wear shirts, trousers, a burnus (a hooded cloak), or clothes which are stained with saffron or Wars (a kind of perfume). Whoever does not find a sandal to wear can wear Khuffs, but these should be cut short so as not to cover the ankles.
More on it here: Ihraam And Scent.