Graduation outfit. What goes with graduation robes?!?

dont tie urself to wearing a collar. if u have the v shape things that go over ur neck u dont need one. id go with something vshape in the neck so that u dont really see it under the robe. i wore i cute pokadot monsoon dress that was white with blue dots and it was just below my knee. cud just see the bottom of it and i wore lil sandles. wears something u feel good in, i feel better in dresses so thats why i wore one. but my friend wore a brown shirt n beige pants n that looked great too. because the colours are navy n silver, id go with the dress because brown n navy n silver would be a weird mix.