David Foster’s 75th Birthday Gift From Wife Katharine McPhee Might Surprise You (Exclusive)

Katharine McPhee kept everything a secret for David Fosterbirthday.

McPhee, 40, and her music producer husband, who turned 75 on November 1, celebrated the occasion at the Hollywood Bowl on Sunday, November 3. McPhee spoke at the event, produced by Live Nation-Hewitt Silva. , PEOPLE caught up American Idol alum.

When asked about shopping for Foster’s birthday, McPhee replied, “I think we’ve done extravagant things in the past.”

“I bought him a cute sweater and a cute jacket,” she continued, “just things that would make him look smart.”

Despite the lack of extravagance, Foster noted that he appreciated his wife’s gifts. “Oh, she bought me a lot of gifts,” he told PEOPLE. “She’s great. She was amazing.”

He added: “And of course we have a three-year-old who keeps us busy and gets us up in the morning. So yeah, it’s pretty regular.”

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McPhee also celebrated a milestone birthday this year; The singer turned 40 years old in March.

“I welcomed my 40th birthday,” the star told PEOPLE at Foster’s birthday celebration, which included performances by Kristin Chenoweth, Josh Groban, Jennifer Hudson and Michael Bublé. “David didn’t have any conversations like, ‘Oh, I can’t believe I’m 75,’ or I didn’t say, ‘Oh, I can’t believe I’m 40.’ mourning this. No, we didn’t do any of that.”

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She continued, “So we’re both kind of cut from the same cloth. It’s like we just accept life as it comes and don’t fight aging because it keeps getting better.”

Foster agrees. “She’s fine and I don’t even think about it,” he said of their recent achievements. “You know, I’m just delighted.”