Kourtney Kardashian isn’t shying away from showing off her post-baby body.

The Lemme founder flaunted her curves in a sultry snap posted to Instagram Tuesday, styling a tiny vintage Dior bikini during her tropical getaway for her 45th birthday.

Posing in a beach chair, she put her physique on display in the multi-colored two-piece top paired with matching high-waisted bottoms.

Kardashian accessorized her effortlessly chic look with black sunglasses.

“45 trips around the sun,” the mother of four, whose birthday fell on April 18, captioned the photo dump.

She left her husband, Travis Barker, 48, speechless as he gushed in the comments, “45 never looked so good.”

“Wish I looked like this after 4 kids,” a fan raved as another chimed in, “This body after 4 kids is stunning.”

“hottest mom ik for sure,” a fourth added.She left her husband, Travis Barker, 48, speechless as he gushed in the comments, “45 never looked so good

Another pic in Kardashian’s carousel showed her posing on a dock while sporting a red oversized T-shirt with her swimsuit.

She was accompanied in the beachy snap by her 9-year-old son, Reign, whom she shares with ex Scott Disick.

Other snaps showed her and Disick’s 14-year-old son, Mason, who was pictured watching fireworks, and their 11-year-old daughter, Penelope.

The Poosh founder also brought her and Barker’s newborn son, Rocky Barker, on vacation with them as the threesome was seen in other candid shots watching fireworks on the beach.

Kourtney hasn’t been afraid to show off her postpartum body and even clapped back at a hater who commented on her figure under Kim Kardashian’s birthday tribute to her last week.

The snap showed Kourtney and Kim alongside their sister Khloé Kardashian posing in black bikinis during their recent vacation to Turks and Caicos.

Thinking Kourtney would find the picture unflattering a critic commented, “Now you know she’s not going to like this photo… lol it’s her bday Kim.. lol.”

To which she reportedly responded, “I LOVE this photo!”

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