Gwen Stefani reportedly went all out for Blake Shelton's 41st birthday.

According to a report, Stefani flooded Shelton with gifts on his special day on Sunday, one of which cost her a whopping $30,000.

"Gwen is going all out for Blake's birthday; she loves spoiling him," a member of Stefani's glam squad revealed to Hollywood Life ahead of Shelton's June 18 birthday.

"So far, she's already spent $50 thousand on him and she's not done shopping. She wanted to get him something really meaningful that she could get engraved. He really doesn't wear jewelry or even watches so it was hard to come up with something. She decided to get him a pocket watch and she found a beautiful vintage one that's 200 years old. Blake loves American history so it's perfect for him. It cost her something like $30 thousand, but Gwen thinks it's worth it. It's a collector's item and so unique. She's excited to give it to Blake!"

Stefani and Shelton began dating in late 2015 and have continued to grow closer to one another in the nearly two years since.

Even Stefani's sons, 10-year-old Kingston, eight-year-old Zuma and three-year-old Apollo, are big fans of the country singer and sported temporary tattoos matching his months ago.

"[Gwen] also bought stuff for [Blake] from the boys. They're giving him two new quad bikes," the insider continued. "The bikes are super powerful and top of the line. They cost over $10 grand each but the kids are so excited it's more than worth it. They can't wait to ride them with him this summer in Oklahoma."

For more of Gwen Stefani and Blake Shelton, check out the video below.