By Kelsey Glein
Updated Jan 14, 2016 @ 3:15 pm
Allen Berezovsky/Getty Images

In case you had any doubts, Kourtney Kardashian has proven once again that the Kardashain-Jenner family owns #TBT snaps week after week.

The mother of three took to Instagram today to share a throwback 'gram of her and sister Kim Kardashian, and it's definitely a good one. Taken in Miami back in 2009, the photo shows the famous duo holding hands as they stand in the waves showing off their incredible figures—Kim is pictured wearing a multi-pattern monokini, while Kourtney dons a zebra-print two-piece suit.

"TBT: on my app," the oldest Kardashian sister simply captioned the picture of the bikini babes. Check it out below.