While on a date night with longtime love Scott Disick, the E! star opted for a slim-fitting dress emblazoned with Betty Boop. She paired the brightly colored mini with black pumps and a tomato red statement lip at the Wildfox Runway show presented by Belvedere Vodka.
On her Instagram account the star snapped an elevator selfie in the vintage Versace frock with the caption: "Been waiting to wear this Versace number again since the 7th grade. #reunited #miami"
That's right! Apparently the 34-year-old can still fit into her middle school wardrobe—quite an impressive feat for a mother of two.
Of course, just one glimpse at Kourtney's stunning swimsuit physique would confirm the star is in great shape.
Earlier that same day, the proud mama played in a hotel pool with her tots Mason, 3, and Penelope, 1, while clad in a plunging black one-piece.
No doubt Kim Kardashian will have an equally gorgeous post-baby bod when she debuts her new mommy figure in the coming months.
Tune in to Keeping Up with the Kardashians on Sundays at 9 p.m., only on E!