Andrea Lieberman will launch e-commerce for her A.L.C. label at the end of the month, and the venture, in the works for several months, informed her latest spring collection. “It was an opportunity for us to take stock and look at who we are as a brand and define who we are. “Ultimately, it was a celebration,” she said. The joyful mood parlayed into Lieberman’s energetic look book shoot, which shows models dancing on the street outside the brand’s Los Angeles headquarters. “It was all about capturing an attitude — this unabashed confidence,” she continued. “Having these moments of freedom, dancing and being inspired by music.”

To that end, her lineup emphasized clothes for real life to live and move in with ease. Think paisley-printed silk maxidresses with ruched waistbands; relaxed, striped cotton suiting and lace-up denim jeans spotted recently on Kim Kardashian. Her signature power knits — some striped and ribbed — were cut in sexy, cropped shapes with open, peekaboo backs, lace-up details and button-up sleeves. Relaxed cotton twill trousers and parkas underscored the easygoing ethos. Lieberman also said she looked to the simplicity of the Nineties and thought about the kind of things she used to wear back then — as in a long maxiskirt worn with a track jacket and a pair of Nikes.