Olivia Wilde Kicks Off Her Weekend With a Gym Session in Studio City

Vanderpump Rules star Ariana Madix  showcases her curves in a tight striped dress while pumping gas in Studio City

Hilary Duff holds hands with daughter Mae, 2, after grocery shopping at Erewhon in Studio City

Nicole Richie treats her lookalike daughter Harlow, 15, to pamper session at Studio City nail salon