ET'S Oscar Monday Blowout! How Lady Gaga and Bradley Cooper delivered the hottest Oscar performance ever. The duet and the look that sparked a social media explosion! Plus, from our exclusive red carpet interviews to the night's biggest winners and surprises, ET has every angle covered from Hollywood's biggest night! Then, Oscars "After Dark." ET's Nischelle Turner takes you inside the "Governors Ball," with Oscar winners Rami Malek and Alfonso Cuar�n. Keltie Knight catches up with Lady Gaga, Tiffany Haddish and Glen Close at the "Vanity Fair" party. Plus, the star that stole the show on stage at the "Elton John Party." And, who owned the Oscar red carpet? We?ll run down the best fashions! Entertainment Begins and Ends with ET.