Kim Kardashian Fully Loaded ... With Toys and Mermaids

8/23/2015 7:01 AM PDT

Kim Kardashian hit up a Toys"R"Us in L.A. Saturday, and it looked a segment from that TV show, "Supermarket Sweep."

Kim's nephew Mason tagged along as she loaded her cart with goodies.  She bought some mermaid toys, which probably has North West and Penelope's name on it, because the 2 little girls came face-to-face with a mermaid earlier in the week in St. Barts.

It's good to be her kid ... and her niece.