The former The O.C. star teamed her hotpants with a pretty patterned top in navy and maroon floral prints.
Rachel – who raises daughter Briar Rose, two, with long-term love Hayden Christensen, 36 – added a pair of nude velour slip on sandals to her lunch look.
The Nashville star chatted with friends outside of the restaurant as she waited for the valet to bring around her vehicle.
Rachel wore a pair of classic black RayBan wayfarer sunglasses over her brown eyes, appearing to go make-up free.
