If the same proportion of females dress to be especially feminine as do males, then about 3% of females cross-dress.
If you mean how many females wear masculine clothing, about 90% except that they feminize that masculine clothing so you don’t really notice.
If you mean how many females dress to be expressly masculine, that is a hard one and I would guess maybe 1%.
The sexes are not opposites, they are co-operating versions of the same species. I generally use ‘other sex’.
Perhaps you mean Katherine Hepburn. De Givenchy got caught on that one as well.