Kourtney Kardashian Looks 'Stunning' In Skimpy Birthday Bikini

Kourtney Kardashian has welcomed being 45 in style. The reality star is fresh from a sunkissed bikini photo opening a gallery of birthday snaps on her Instagram, and fans seem to think she looks better than ever. Posting as she makes headlines for turning 45 as a new mom, Kourtney sizzled in a multicolor swimsuit from the beach in her opening snap, then sharing a series of vacation photos that included her kids, plus 2022-married husband Travis Barker. The Poosh founder made headlines last fall for welcoming her first child with the Blink 182 drummer. Kourtney was 44 when baby Rocky was born.

Scroll for the photos. Seated on a lounger as she enjoyed a powder-sand beach, Kourtney kicked off her gallery with a fun expression as she pouted while lifting her arms up and placing her hands under her chin.

Flaunting the postpartum curves that her fans have dubbed the "natural bod," the brunette flashed her cleavage and shapely legs while rocking a bold, multicolor two-piece that flattered her frame and came with the Dior logo on the briefs.

Going leggy as she posed pantless and from a beach deck in her second snap, Kourtney showed off her killer figure in only a t-shirt as she enjoyed family time, making sure to feature one of her sons — Kourtney shares kids Mason, Penelope, and Reign with ex-boyfriend Scott Disick, with the second photo showing Reign. Further snaps showed Kourtney and others in a luxurious backyard pool, plus hitting the beach at night. A rare photo of Kourtney's baby also delighted fans as the star reminded everyone how much she's loving motherhood.

Fans went wild in the comments, although The Blast photos have already documented this positive response as Kourtney showed off her bikini body during her April Turks and Caicos vacation. "You look beautiful Kourtney, happiness and love suits you," one fan said. "Natural bod over anything go Kourt," another replied. Also gaining likes was a fan telling Kardashian: "This body after 4 kids is stunning."

Kourtney didn't miss a business opportunity as her 2023 pregnancy made headlines. She was quick to promote the maternity supplements from her Lemme wellness brand on social media, writing: "@lemme Mama is deeply personal to me as it was such an important part of my journey to become a mom again. I love reading all your reviews on it."

"Our clean, active, and gentle prenatal multivitamin capsule designed for the complete journey— preconception, pregnancy, and postpartum," the brand writes of its mom-to-be product. Kourtney is also CEO and founder of her Poosh lifestyle brand, founded in 2019. Both companies have featured products and opinions centering around pregnancy as Kourtney went from being a mom of three to one of four.