By Chiara Fiorillo Celebrities have started arriving on the red carpet at the Oscars in Hollywood, looking amazing in some chic outfits. The first to arrive were reality TV star Nikki Bella in a long, feathery gown, actress Laverne Cox in a black and gold dress, and TV host and reporter Zuri Hall wearing a sleeveless golden dress. Vanessa Hudgens was among the celebs arriving on the red carpet for the biggest night in the acting world. The High School Musical actress officially announced she was going to be a first-time mum when she walked onto the red carpet with a visible baby bump. She futu…