Why Katharine McPhee, 40, and Husband David Foster, 75, Aren't "Mourning" Getting Older

Katharine McPhee and David Foster are smashing the notion that everyone hates getting older. 

In fact, the couple—who share 3-year-old son Rennie—aren't ones to make a big deal about it despite celebrating milestone birthdays this year. 

"I welcomed my 40s," Katharine told People in an interview published Nov. 5, "and David didn't have any conversations about, like, 'Oh, I can't believe I'm 75,' or I didn't say, like, 'Oh, I can't believe I'm 40. I'm really mourning that.'"

And why is that? As Katharine put it, she and David, who she married in 2019, are "very similar" in their approach to getting older.

"We're kind of both cut from the same cloth," she added. "It's like we sort of just accept life as it comes, and we're not fighting getting older, because it just keeps getting better."

And David—who is also father to children Alison Jones, 54, Amy Foster, 51, with ex-wife B.J. Cook, as well as Sara Foster, 43, Erin Foster, 42, Jordan Foster, 39, from his marriage to Rebecca Dyer—echoed his wife's statement.

"I don't even think about it either," he shared. "You know, I'm just groovin'."

Besides, Katharine and David know the secret to making their marriage succeed.

"Therapy," Katharine told E! News last year. "A good therapist. Or that you just have someone in your life or another couple in your life that is helpful when there's discord, disagreements."

She continued. "I really feel like you can talk through most everything, but you have to have the language, the vocabulary to do that. So that takes practice and self-awareness and having skills to facilitate those conversations."

And having first met in a recording studio so many years before starting their relationship helped give the two a different perspective on their romance—which has made all of their musical collaborations over the years even more satisfying. 

"That's truly where we know each other the best," Katharine shared, "knowing the ease, and the greatness, and the way he works and just always gets the best thing out of people."

For a look back at Katharine and David's love story over the years, keep reading.

Rewind all the way back to 2006, when the pair meet on season 5 of American Idol. The record producer serves as Katharine's mentor on the singing competition, which kickstarts several musical collaborations and chance run-ins at celebrity events over the next several years. 

In May 2017, eyewitnesses spot the undercover lovebirds enjoying a "very intimate" dinner date in Malibu. "By the end of the date, Katharine sat on David's side of the table and cuddled him with a blanket," a source shares with E! News. 

After a fairly quiet summer, Katharine and David heat up once again at a Los Angeles Lakers game in November 2017. The Smash star also attends the performer's 68th birthday celebration alongside David's daughters Erin Foster and Sara Foster, as well as his stepsons Brody Jenner and Brandon Jenner.

The "Over It" songstress plays coy about the dynamics of their relationship in a 2017 interview with Health magazine, sharing, "We're very close friends, and we've been friends for a long time. I'm really, really fond of him, and I think he's an incredible person... People can say whatever they want."

Their talents unite during a star-studded holiday bash, where the couple performs lively renditions of "White Christmas" and "My Grown Up Christmas List." 

Not so fast, you two. In January 2018, a source tells E! News the couple isn't rushing down the aisle: "David has not shown any interest in getting married again. He hasn't discounted how he feels about Katharine but there are no plans for them to even get engaged anytime soon."

Katharine and David show off their undeniable chemistry at the 2018 Met Gala. A red carpet to remember, no doubt!

In July of that year, E! News reports that David has finally popped the question while on vacation with Katharine in Europe. "Katharine has been wanting this for a while now," a source reveals. "David has been planning the engagement, but has kept it very secretive. Only a few family members knew about his plans."

The two are smitten with each other at the 2018 Carousel Of Hope Ball. Katharine sizzles in a pink satin dress, while her beau opts for a classic tux.

It's a reunion! The couple supports and celebrates American Idol's Simon Cowell as he receives his Hollywood Walk of Fame star in Los Angeles in 2018.

It's date night! The two lovebirds attend Elton John's famous Oscar Viewing Party in 2018.

The couple poses for the camera on the red carpet at the 2019 American Icon Awards gala.

Think pink! The actress lights up the red carpet with her mesmerizing gown at the Breast Cancer Research Foundation's 2019 Hot Pink Party. Her man wears a traditional black and white suit.

After scoring the lead in the London production of Sara Bareilles' Tony-nominated show, the pair attends the press night after-party for Waitress: The Musical in 2019.

On June 28, 2019, the lovebirds tie the knot at the church of St. Yeghiche in London.

"Exactly 13 years ago today my very first single, 'Somewhere Over The Rainbow,' was released right after Idol. Today... I'm marrying the man who produced it," the bride posted on Instagram. "Life is full of beautiful coincidences, isn't it? Thank you for taking me over the rainbow, David."

In October 2020, a source confirms to E! News that the couple is expecting their first child together.

The American Idol alum gushes over the music producer on Valentine's Day 2021, sharing on Instagram, "My forever Valentine!! My best friend, my favorite person, my motivator, my everyday!"

In February 2021, news broke that Katharine had given birth to a baby boy named Rennie. She later shared a photo of her "boys." 

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