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While Kim Kardashian is turning the Hamptons into her own personal runway, her sister Kourtney is keeping it casual.

The two went to dinner together on Tuesday night in Sag Harbor before heading to a carnival, where Kim looked stylish as ever in a revealing green wrap dress that put both her cleavage and legs on display. She finished her look with suede tan heels, her "Nori" necklace and her hair straight.

With the exception of her workout gear, the 33-year-old has been wearing nothing but designer duds while on vacation in New York with her entire family.

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Kourtney, on the other hand, is keeping it comfortable during her pregnancy.

Ealier in the day, the expecting mom was seen going for a boat ride with Scott Disick, children Penelope and Mason, Kris Jenner, Khloe Kardashian, Kendall and Kylie Jenner and an E! TV crew.

Kourt showed off her growing belly in a sheer floral top and short shorts, which she later paired with an equally-comfy plaid button-down for dinner with Kim.

It's clear these two have totally different closets these days. Whose style do you prefer? Sound off below!

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