David Foster Catches Wife Katharine McPhee Practicing New Signature After Wedding: ‘She’s Sooooo Cute!’

Mrs. Foster! David Foster discovered that his wife, Katharine McPhee, has been trying out her brand new signature after the couple’s June 28 wedding.

“Caught my wife practicing her new name and forging mine!!!” he captioned a photo of scribbles reading “Kat Foster” and “David Foster” on Instagram on Wednesday, July 10. He added: “She’s sooooo cute!!!!”

The Waitress star, 35, responded in the comments section with several cat horror face emojis, plus one shrug.

McPhee changed her name to Foster after their wedding. “Introducing Katharine Foster,” she wrote with a happy heart emoji on Twitter one day after the couple wed.

Earlier this week, it was the American Idol runner-up’s turn to tease the music producer, 69, about his new role as her social media spouse.

Katharine McPhee Wearing Pink Floral Dress and David Foster
Katharine McPhee and David Foster attend the Hot Pink Party hosted by the Breast Cancer Research Foundation at Park Avenue Armory on May 15, 2019 in New York City. Dimitrios Kambouris/Getty Images for Breast Cancer Research Foundation

“Rate @davidfoster’s Instagram husband skills from 1-10 in the comments section,” she captioned a shot of herself posing in front of the ocean in Italy, where the duo have been honeymooning, on Saturday, July 6.

The pair, who first sparked romantic buzz in May 2017, said their “I dos” at Church of Saint Yeghiche in West London last month in front of roughly 100 guests, including Foster’s famous daughters, Sara and Erin Foster, whom he shares with ex-wife Rebecca Dyer. (David is also a father to Allison, 49, and Amy, 35, whom he shares with ex-wife B.J. Cook, and Jordan, 32, whom he also shares with Dyer.)

The ceremony “was really intimate and special, not a huge spectacle like David’s last one, but still magical,” a source said of the nuptials, referencing Foster’s 2011 wedding to Yolanda Hadid.

The bride walked down the aisle in a gorgeous Zac Posen gown that paid homage to the twosome’s musical roots with notations from “The Colour of My Love” — the song David wrote for Celine Dion and her late husband, René Angélil, on their wedding day.

“Zac told me he wanted to incorporate our love of music somehow into the dress, so one of David’s songs was notated on the back,” McPhee told Vogue in July.

The Smash alum shared a sweet tribute to her husband on Instagram hours before their nuptials. “Exactly 13 years ago today my very first single, Somewhere Over The Rainbow, was released right after Idol,” she captioned a video of herself singing the tune while Foster played the piano beside her. “Today… I’m marrying the man who produced it. Life is full of beautiful coincidences, isn’t it? Thank you for taking me over the rainbow, David.”

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