She took out the cattle ring!
That's what it looks like to me anyway. I can't see it on any of the pictures of her from the Oscars. It was the only flaw in her appearance, in my opinion. Very attractive woman with a stupid nose ring. Hope she tired of it and it doesn't come back.
https://www.dailymail.co.uk/tvshowbiz/article-13181831/Florence-Pugh-continues-crusade-free-nipple-goes-braless-sheer-gown-Vanity-Fair-party-Oppenheimers-Oscars-success.html