This is totally not my thing (personally I don’t think it’s really the Roman empire by this point*) but it’s in the books on my shelves and someone asked, so…
Women’s clothing in Italy in the 5th century:
From Sebesta & Bonfante “The World of Roman Costume” come these images:
These last two are during Justinian’s reign, so they are a little later but the styles are similar.
From Alexandria Croom’s “Roman Clothing and Fashion” there are these:
Materials choice (ahem, giant glued fake gems on a plastic belt) is just one of the reasons I am suspicious of this book, and particularly the “recreation” section. Take with a pinch of salt.
The caption on the last one reads “Serena and her son Eucharius, late 4th century ivory diptych.”
* You know that old thought experiment about a red sock? It gets a hole in it, and is darned with blue yarn. This happens repeatedly until the entire sock is blue. Is it the same sock?
I argue that 4th century onwards, the Byzantine Empire isn’t really Roman. They considered and called themselves Roman, but… different capital, different government, different religion, different clothing… seems like a pretty blue sock to me. Even the money looks different.