Okay, we're TOTALLY jealous! Kourtney Kardashian is giving us vacay envy, body envy, fashion envy, Instagram envy!

The mother-of-three was joined by her kids, her pals (including publicist Simon Huck, above) in Capri, Italy, after spending some initial alone-time with hunky boyfriend Younes Bendjima.

The reality star is keeping up with her social media duties while she's away, posting lots of mouth-watering Instagrams of her wearing beautiful crop tops, wide-legged trousers, Gucci loafers, bikinis, posing on boats, a Vespa, and on and on!

Meanwhile, ex Scott Disick's just loafing around Malibu with teenage girlfriend Sofia Richie. Hmmm ... who's living their best life?