Well, Saudis usually wear their robes when visiting Western countries...so they do fit in with a few of our remaining religious cultures...it would be very hard to make a choice of clothing to "fit" in with a multicultural country whose clothing styles run the gamut from from aboriginal ceremonial to punk, goth, cowboy, grunge, folk, country, wife wear, rocker, walmart wear, pyjama wear, sleaze, skinhead, labourduds, slob wear, a dazzling variety of work-related uniforms or GQ style suits and ties with or without a turquoise turban.  Might as well just wear what keeps you comfortable.