Katharine McPhee Dons Stepdaughter's Chic Swimsuit Line in New IG Pic

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Katharine McPhee is using her Instagram to show support for her family (and we're here for it).

The American Idol alum recently shared a photo to her Instagram story, where she was seen sporting a swimsuit designed by her stepdaughter, Sara Michael Foster.

McPhee shared a mirror selfie in the summery design, saying, "Best one piece I've ever tried. Usually it's cut too low and the torso isn't long enough - straps are adjustable. So comfortable! You nail it @sarafoster." The 37-year-old also tagged Summersalt, who helped produce the colorful one piece. The company describe themselves as "designer quality swimwear and essentials for the modern woman."

The sky blue and white suit was the result of a collaboration between McPhee's stepdaughter and the swimwear brand. Their collection, called Cotton Candy Skies, is "Inspired by the cotton candy sunsets that are the backdrop to so many happy family moments and memories." With this line, the team aims to provide "vibrant hues of blues and pinks with Summersalt’s signature high-quality fabric and impeccable fit for the whole family." If you want to wear this suit while you hang by the pool, it is being sold here for $125.

While McPhee has been promoting Foster's beach-ready designs, she has also been enjoying time with her newborn son. Rennie David Foster, the first child between McPhee and her husband, David Foster, was born on February 24. Prior to the couple's wedding in 2019, Foster had 5 children from previous relationships, including Sara (40), as well as Allison (50), Amy (47), Erin (38) and Jordan (34).

We hope the new mother is getting some much-deserved beach time in that chic suit.

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RELATED: Katharine McPhee Shared Never-Before-Seen Photos of Her Wedding to David Foster in Honor of Their First Anniversary