Celebrity Style Dr. Jill Biden Wears a Black and Red Floral Oscar de la Renta Dress for President Joe Biden’s Victory Speech Posted by Posted on Nov 8, 2020 showMessage = false, 2000)" > Copied to clipboard! Professor #FLOTUS Dr. Jill Biden posed with President-elect Joe Biden wearing an Oscar De La Renta dress (sold out) at the victory speech in Delaware. We’re predicting lots of prints from our First Lady for the next 4 years. What say you? 📸Getty