Rachel McCord might not be as famous as her sexy celebrity sister, but she sure looks like a star.

The model and younger sister of "Nip/Tuck" and "90210" actress AnnaLynne McCord hit up the beach in Santa Monica this week ... and had herself a fun and sand-filled photo shoot.

After applying sunscreen to her buns, Rachel enjoyed a smoothie, read a magazine, snapped a few selfies, took a dip and even fed some birds.

All in a day's work.