I don't know specifically about Tom Fords, but in general, a trick one can try is a change in temperature (for instance, refrigerate the bottle for 30') or place a hot towel on the cap.
Of course, make sure that there's no plastic or the like sealing the cap (I don't know if tom fords have it, other brands do, and sometimes it's hard to see).
And one thing you should not do is force. The glass can shatter. Rather, try twisting or rocking the cap, but lightly, and perhaps with a towel, to avoid shattered glass if, by change, the glass breaks. (I say because I did once cut myself trying to open a stuck vintage perfume bottle).