The "Womanizer" songstress turned 38 on Tuesday, and she went all out with boyfriend Sam Asghari with a special day of fun and celebration in Miami, Florida.
Spears took to Instagram to commemorate the occasion with a video showcasing some highlights from her birthday festivities, which she captioned, "It’s my Bday Bitches ?????."
According to the epic clip, she spent her birthday relaxing on the sandy beaches, bowling and ice skating in the psychedelic venues at the Edition Hotel, checking out some pretty epic sand sculpture art and generally spending some quality time with her beau.
Meanwhile, Asghari penned a heartfelt message in honor of his ladylove's special day, sharing an adorably hilarious video of himself wiping out while ice skating with Spears in the hotel's pink-lit skating rink.
"We live, we laugh, we argue, and most of all we LOVE ❤️ There’s a reason why the world fell in love with you!" he wrote. "You might be the princess of pop but mostly you’re my princess ? Biggest Happy Birthday to you @britneyspears."
"Britney struggles to keep her life on track, but right now she’s been doing incredibly well. Her family is very proud of the steps she’s taken to get where she is today," the source said. "Britney’s been following her doctor's orders and is in a very stable place at the moment."
"She is trying to keep life simple and spend time with Sam and her kids," the source added of Spears' two children with ex-husband Kevin Federline, Sean, 14, and Jayden, 13. "She plans to spend her birthday with her boys. She wants to just have a nice time with family."
Check out the video below for more on Spears and Asghari's holiday plans.