I am often reminded that there's a striking difference in the kind of conservatism shown in American law firms and firms in the Commonwealth. Here, you'd be hard pressed to find a summer clerk or intern without cuff-links. Tie bars are common. But the advice about fitting in remains spot on. You have an acceptable margin of personality in your dress. That widens as you advance in seniority. As an intern, it is very narrow. If it's anything like here, the firms are looking for reasons not to give you a graduate offer. Don't give them a reason.