Britney Spears Disneyland California

Disneyland is the happiest place on Earth — and Britney Spears and her sons are proving it.

Spears, who first shot to fame as a Mouseketeer on “The Mickey Mouse Club,” brought her sons Sean Preston and Jayden James to Disneyland, in Anaheim, California over the weekend to celebrate their birthdays.

The family was photographed laughing, playing, and enjoying all the rides the park has to offer.

“So much fun celebrating the boys’ birthdays at Disneyland yesterday!!!” Spears enthusiastically captioned an Instagram snap of Sean, who turns 12 on September 14, and Jayden, who turns 11 on September 12, along with a few of their pals.

But beyond her sons Spears also brought along her boyfriend Sam Asghari, who she reportedly first met on set for the “Slumber Party” music video.

Asghari also shared an image to Instagram of himself cuddling up with the pop princess with the caption, “happiest man on earth.”

According to the Daily Mail, the entire birthday crew enjoyed a few of the rides including Radiator Springs Racers, which is based on the movie “Cars,” and Soarin', which is a flight motion simulator.

As Daily Mail further noted, the pair looked absolutely California cool with Spears showing off in a strapless sweetheart neckline blue romper and Asghari looking comfy in a beige t-shirt and jeans.

Sure, the party was for her kids, but perhaps Spears was celebrating the end of an era, too, as her Vegas residency is set to come to a close this December after a nearly five-year run.

But this may not be the end of the show the “Toxic” hitmaker.

“We are done with this show, and our next move is undecided. We are still talking with Caesars Entertainment and other interested parties in Las Vegas,” Spears' manager, Larry Rudolph, told the Las Vegas Review-Journal. “Anything is possible.”