Article continues below advertisementKim Kardashian turned up the heat for her sister Kendall Jenner's birthday party.The reality star, 45, flaunted her curves in a tight brown maxi dress during the model's rowdy beach celebration on Monday, November 3.Kardashian bared her cleavage in the busty ensemble, paired with a zebra-print bandana. Article continues below advertisementSource: @kimkardashian/InstagramKim Kardashian celebrated Kendall Jenner's birthday on the beach.She coordinated with Jenner, who bared her toned tummy in a crisscrossing halter crop top and flowing printed skirt.