The mother-to-be, who is expecting a girl, is clearly staying fit during her third trimester as she grabbed another bottle of the premium health drink in New York City on Friday.
Nicky's bump was on full display in a curve-hugging black blouse, while her skintight dark grey jeans showed off her long lean legs.
The blonde beauty paired the laid back look with fashionable brown suede studded and fringed moccasins.
While Nicky's long platinum locks were loosely braided back and hidden underneath a wide-brimmed grey suede fedora.
The hotel heiress accessorized with multiple diamond necklaces and rings, including her giant wedding sparkler, and a few colorful bracelets around her wrist.
The multitasking lady protected her bump with her hand as she made a call from inside the juice shop.