Abu Sa'eed Khudari (R.A) says, "When Rasulullah (S.A.W) put on a new garment, he would in happiness mention that garment's name. For example, 'Allah Ta'aala gave me this qamis (thowb, kurtah), 'amaamah (turban) sheet, etc" Then recited this du'aa:
'Allahumma lakal hamdu kama kasauw-tanihi, as-aluka khayrahu wa-khayra ma-suni'a lahu wa-a'u- dhu bika min sharrihi wa-sharri ma-suni'a lahu'.Translation..."Oh Allah, all praise and thanks to You for clothing me with this (garment). I ask You for the good of it and the good of what it was made for, and I ask Your protection from the evil of it and the evil of what it was made for."
English reference: Book 8, Hadith 59
Arabic reference: Book 8, Hadith 60