Kourtney Kardashian, Kim Kardashian, Birthday Tribute

Kourtney Kardashian, 44, takes to Instagram Stories to wish her sister Kim Kardashian a happy 43rd birthday. Kourtney Kardashian, Kim Kardashian, Birthday Tribute

[{"selector":"#anim-f04f5e47-3698-4e12-a55b-29a0360e4b66","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] In her tribute, Kourtney reminisces about the years they've spent together, from sisterly bickering to becoming allies in business ventures.

[{"selector":"#anim-6ceb821c-d70f-467f-add4-0202e9d21253","keyframes":[{"offset":0,"transform":"translate3d(0, -648.62618%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -182.393681816%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -62.008662808000004%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -23.285679862%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -10.118568408%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":0,"duration":600,"fill":"both"}] The Poosh founder appreciates Kim for listening to her wild ideas and enduring the "joys of sisterhood." Kourtney Kardashian, Kim Kardashian, Birthday Tribute

[{"selector":"#anim-35a285bb-04b4-4ea3-b09f-6f9d96a263af","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] She shares how their fights on TV were nothing compared to the hair-pulling, nail-digging ones during their early high school days.

[{"selector":"#anim-93725526-aae4-4ac4-9e93-aebb3dcf15c8","keyframes":[{"offset":0,"transform":"translate3d(0, -830.44123%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -233.520073876%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -79.390181588%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -29.812840157%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -12.954883188%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":0,"duration":600,"fill":"both"}] Kourtney expresses her profound love for Kim, blessing her new year with happiness and joy. Kourtney Kardashian, Kim Kardashian, Birthday Tribute