Laura Dern and Jayme Lemons chat with ET's Nischelle Turner about 'Palm Royale,' premiering March 20 on AppleTV+. Laura, who's producing and starring in the upcoming drama, gushes over working with comedy legend, Carol Burnett. Plus, she shares how she feels about stepping back into her 'terrifying' role as Renata Klein for 'Big Little Lies' season 3!