Modesty And Dress Code
The basic principle concerning garments is that they are permissible, and the Muslim may wear whatever he wants of things that he has made or that Muslims or others have made for him. This is what the Sahaabah (may Allaah be pleased with them) did in Makkah and elsewhere. Those who became Muslim did not wear special garments that were just for them. The Prophet (peace and blessings of Allaah be upon him) wore Syrian garments and Yemeni cloaks, and the people who made them were not Muslims. What matters is that the garment should meet the conditions stipulated by sharee’ah. Source: https://islamqa.info/en/answers/69789/what-are-the-garments-of-the-kuffaar-that-we-are-forbidden-to-wear