Cap-sleeves make everyone's upper-arms look chunky. They do not emphasize musculature; rather, cap-sleeves make one's muscles look like unappealing lumps. Attractive sleeve-lengths are 3/4 and to the wrist. Short sleeves are not elegant--when was the last time you saw someone look chic in a bowling shirt? If you must expose your arms, sleeveless styles are more elegant than cap-sleeves and short sleeves.
©M-J de Mesterton 2010