Kourtney and Kim Kardashian at the beach in Miami

"Showing off her bikini bod with sister Kourtney, Kim Kardashian had a day at the beach in Miami today (September 24).

The reality diva wore a white one-piece bathing suit with a gold band around the waist and a white cover-up while her sister covered her post-baby body with a white t-shirt and striped shorts."

(SOURCE: http://celebrity-gossip.net/kim-kardashian/kim-kardashian-white-hot-bikini-babe-732327#