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Hard to believe Kourtney Kardashian had her baby girl Penelope in July. The 33-year-old reality star's post-baby bod looks fabulous!

We've seen her working out hard on the beach in Miami with sister Kim, and looks like her hard work has paid off .. big time.

Mason's mom, whose been busy filming her reality show, stepped out in a white shift dress, multi-colored heels and carrying a white Celine bag while doing a little shopping on Lincoln Road. Kourt's legs look phenomenal.

We can't wait to see the mama of two showing off more of her slimmed-down shape on the upcoming season of Kourtney & Kim Take Miami!