July 07, 2014 10:00 AM

Ever since news of her third pregnancy broke, Kourtney Kardashian has kept her bump chicly under wraps.

But over the weekend, the expectant reality star, 35, decided to bare it all with a little help from daughter Penelope Scotland, who turns 2 on Tuesday.

While soaking up the sun in the Hamptons and bonding with her little girl, Kardashian showed off her growing belly in a metallic gold bikini. Talk about a cute mommy-and-me moment!

Courtesy Kourtney Kardashian

Along with relaxing by the water, the Keeping Up with the Kardashians star (who is also mom to son Mason Dash, 4½) spent the weekend taking a helicopter ride around N.Y.C. and sailing on a boat as well.

“Weekends are off limits for working unless absolutely necessary because that’s my family time,” the hands-on mom has said.

RELATED: Pregnant Stars Show Off Their Bikini Bumps

— Anya Leon

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