AceShowbiz - Kourtney Kardashian shut down body shamers once again. "The Kardashians" star made use of her Instagram account to share a video of her flaunting her physique during her tropical getaway to celebrate her 45th birthday.

On Tuesday, April 23, Kourtney treated her 224 million followers to a slew of sultry snaps during her sunny trip. The mom of four showcased her curves while rocking a tiny vintage Dior bikini, which consisted of a multi-colored two-piece top and matching high-waisted bottoms.

Lounging on a beach chair, the Poosh founder pouted her lips to the camera. She additionally wore a pair of black shades to protect herself from the scorching sun.

In another photo, Kourtney posed on a wooden stair as she wore a red shirt. Her son Reign, whom she shares with Scott Disick, was also captured in the picture, donning a white top and black shorts. Kourtney also included a picture of her enjoying beautiful fireworks alongside husband Travis Barker, who held their newborn baby Rocky. Other snaps featured her 14-year-old son Mason and 11-year-old daughter Penelope.

Kourtney captioned the pics, "45 trips around the sun." In the comments section, the Blink-182 drummer gushed over his wife, writing, "45 never looked so good." Travis' stepdaughter Atiana De La Hoya, meanwhile, left several red heart emojis, with Miranda Kerr commenting, "A dream."

The post came after Kourtney hit back at haters suggesting that she didn't look good in the photo posted by sister Kim Kardashian on her birthday tribute. As trolls claimed that Kim shaded Kourtney with the picture, the latter stressed, "I LOVE this photo!"

She continued, "It is me and my sisters having the best time on a trip with our kids…and the memories to last forever! And I LOVE this body that gave me my 3 big babies and my little baby boy."