The live shows on The Voice are in full swing! Last week marked the first week that the contestants and their coaches were performing and critiquing on the fly. So just how does Coach Christina Aguilera prepare for the spontaneity of live TV? With a team of stylists that aim to make her look just as good as her contestants sound, and we’ve got the scoop from stylist Simon Harouche on just how they get Christina looking her best all season long. "Before the live shows start we try to do as many fittings as possible," Harouche told us. "We photograph everything and make a book with all of the clothes along with her favorite hair and makeup looks. It’s kind of like a styling bible!" And while this serves as a guide, Aguilera goes with how she’s feeling to determine her look for the show that day. "It’s definitely an organic process," Harouche says. Last week, Aguilera mixed it up going for three distinct looks: a sexy white dress for the first live show, a menswear-inspired look the next night and a stand-out embellished top for the results show. "Christina likes to change things up," Harouche continued. "She doesn’t always want to wear dresses all the time. It’s good to switch it up." Catch Christina and her contestants battling it out against Team Blake, Adam, and Cee Lo tonight on The Voice at 8/7c on NBC.