Hilary Duff Just Jetted to Mexico With Mandy Moore for a Belated 39th, and Her Comeback Year Keeps Getting Bigger

Nobody does a birthday comeback like Hilary Duff. The Lizzie McGuire star turned 39 late last month, and instead of quietly blowing out candles at home, she grabbed her girlfriends and headed straight for the beaches of Puerto Vallarta, Mexico.

New photos show Duff glowing in a yellow swimsuit as she strolled along the sand, soaking up the sun with her gal pals. And here is the detail fans cannot stop talking about: her close friend Mandy Moore is reportedly part of the birthday crew, even though the This Is Us star stayed out of the beach shots.

It is the kind of trip that feels very Hilary. Work hard, play harder, bring your people with you.

A Belated Birthday Worth the Wait

Duff turned 39 on September 28, but between a sold-out world tour and a growing list of projects, a proper celebration had to wait. The Mexico getaway is her belated birthday gift to herself, and honestly, she earned it.

This year has been nothing short of a career rebirth for the singer and actress. Her Lucky Me Tour has been selling out arenas across the globe, she was named one of Time’s 100 most influential people of the year, and she just gave fans a brand new song last week.

The trip also fits Duff’s whole philosophy about friendship these days. She told Glamour that the friendships she has made since becoming a parent are some of the deeper, more surprising connections of her adult life. Moore is one of those friends, and she has openly praised Duff’s balancing act, calling her an incredible talent and an incredible mother and saying the way she balances her life is really inspiring. The two stars also know how to do a girls night done right, which had its own moment in London this week.

The Song, the Soundtrack, and the Tour That Will Not Slow Down

Just last week, Duff dropped her new song “CATastrophe,” and it is not just any release. The track appears on the soundtrack for the upcoming animated movie The Cat in the Hat, which hits theaters on November 6.

She wrote it with her husband Matthew Koma, plus Madison Love and Brian Philips, who also worked on her latest album luck… or something. Koma and Philips produced the track too. A family affair, a pop soundtrack, and a birthday trip to Mexico: the woman is living.

Meanwhile, the Lucky Me Tour keeps expanding. Newly announced dates for 2027 will take her across Canada, Mexico, and South America, with a long list of shows already marked sold out, including both Mexico City dates. She also announced she will perform on select dates of this year’s iHeartRadio Jingle Ball Tour.

The North American fall leg kicked off October 1 in Sunrise, Florida, and she is still on the road right now, with a show in Hershey, Pennsylvania on October 9.

Why This Trip Matters

Celebrities take vacations all the time. So why does this one feel different?

Because Duff’s comeback has been built on something real. Fans who grew up with Lizzie McGuire have watched her grow up too: the early 2000s pop hits like Come Clean and So Yesterday, the quieter years, then the return to acting on Younger, and now a full music revival that has critics and arenas alike sold on her second act. It is the kind of late-career reinvention we also saw when Olivia Colman walked her first runway at 52, proof that the best chapters can come later. During her intimate comeback shows in January, she even performed What Dreams Are Made Of for the first time since her Disney days, and the crowd lost its mind. It has stayed on the setlist ever since.

Mother of four, arena headliner, Time 100 honoree, and now a birthday girl on a Mexican beach in a yellow swimsuit. That is the whole story in one photo.

The friend group around her says a lot, too. When Moore describes how Duff balances it all as inspiring, you get the sense this trip is not just a vacation. It is a reset with the people who keep her grounded while her career hits a level it has not reached in decades. Surprise musical moments have been the theme of 2026, from Shakira’s surprise duet with Dua Lipa in Madrid to Duff’s own soundtrack turn.

What Is Next for Duff

Short answer: a lot. The Cat in the Hat soundtrack drops with the movie on November 6, giving her one of the most family friendly pop placements of the holiday season. The Lucky Me Tour rolls through the fall across the US, then heads to New Zealand and Australia later this month, with Canada and Mexico dates in early 2027.

If the belated birthday trip is any sign, Duff is celebrating every bit of it. Yellow swimsuit, Pacific Ocean, best friends. Not bad for 39.

Quick recap

• Hilary Duff, 39, was spotted on a belated birthday girls trip in Puerto Vallarta, Mexico, in a yellow swimsuit.
• Mandy Moore is reportedly part of the trip, though she did not appear in the beach photos.
• Duff released her new song “CATastrophe” last week for The Cat in the Hat soundtrack (in theaters November 6). Read the original JustJared report and Consequence’s tour coverage for more.
• The Lucky Me Tour keeps adding 2027 dates, many already sold out, and she joins this year’s iHeartRadio Jingle Ball Tour on select dates.