Nicole Richie Credit: Tyler Golden/NBC

Many of the aspiring designers’ looks on Fashion Star fail to wow the buyers and judges, but Nicole Richie's style gets rave reviews from fans every week.

"It all depends on my mood that day I'm filming," the trendsetter tells Us Weekly of choosing her attention-grabbing ensembles like the boho-glam beaded number she donned on Monday's episode. "I don't have my outfits planned out at all."

For the show's premiere Richie, 30, chose a  jeweled headpiece fromher own House of Harlow 1960 line and several glittery bangles with a slinky black vintage dress and Christian Louboutin heels.

On the second episode she worked a metallic print floor-length vintage dress with Christian Louboutin mules and a House of Harlow 1960 pyramid station necklace.

"I actually borrowed [that dress] from a friend and I tailored it to fit me on purpose, hoping that she'd let me keep it," she admits.