Shud i wear a casual dress or tshirt with skinny jean..?

ok...ive bn trying to get a nice outfit cos end of tis mth,my bf is coming back after months of separation..im sooo excited and i wanted to luk pretty wen he see me...the only problem is that i dun knu how to dress up myself and luk attractive...cos i really not tat good in make-up and stuff...