After partying and blowing chunks hard last week in New York City, Britney Spears calmed things down in Florida earlier this week.

The Gossip has learned that Spears checked into the Four Seasons Hotel in Miami around midnight on Monday with her two accessories little angels, 17-month-old Sean Preston Federline and 5-month-old Jayden James Federline.

And yo, they got hooked up!

"The hotel was full so we put Britney Spears and the kids in a two bedroom condo hotel room, which is very residential and like a big city apartment," a hotel source dished.

According to the source, Britney and her boys made the trip solo - minus a nanny, or Isaac Cohen (who recently dumped Brit over the phone).

"Britney called the concierge desk, saying she was not able to shop herself because she had no one to watch the kids, so would a female please go out and buy her a bright-colored bikini," says the source. "Britney was totally wishing she had help to take care of those kids."

Apparently, her personal bitch manager, Larry Rudolph, was indisposed.

By Wednesday night, Spears was feeling so overwhelmed by her two kids that even though she had planned originally to stay a week she decided to fly back to Los Angeles on Valentine's Day.

"Something happened," explains the source.

Thanks, source! But before Spears hopped her private jet, she coped with her recent train wreck status romantic blues with some retail therapy at Miami's Bebe Aventura store.

According to an eyewitness, Spears spent $1,500 on Bebe mini-dresses while the staff kept an eye on the spawn of Kevin Federline. Classy.