Britney Spears' bodyguards allegedly report back to her father about everything she does.

The 32-year-old singer has been the subject of a conservatorship order since 2008, which was the climax of her year-long meltdown that saw her shave her head and lose custody of her two sons with her ex-husband Kevin Federline.

Although she now has her professional life back on track and is staging a two-year residency in Las Vegas, her father Jamie Spears and several others still make all her decisions for her.

"The bodyguards - who are with Britney 24/7 - report to her dad and tell them everything she says and does. She has no credit cards and has to check every purchase with her dad, who gives her a monthly allowance. She's not allowed near booze and her dad has hired a nutritionist to plan her diet," an insider told British magazine Heat. "He even has an assistant lay her toothbrush out, already loaded with toothpaste, because she often forgets to brush her teeth. Also Brit's a germaphobe, she'll only drink from a straw - even coffee - which she has to watch being unwrapped."

Britney has had a series of romantic relationships since her breakdown, including with her ex-fiance Jason Trawick.

She is now dating Dave Lucado, but apparently their budding romance is closely monitored.

"She's still completely controlled down to the last second. Her dad and team have all of her calls and texts monitored, Brit doesn't type, so she has an assistant who vets her messages and types back what she dictates. Until recently she wasn't even allowed her own phone. Now, she's allowed restricted calls to her boyfriend but she still isn't allowed on the internet without supervision," the source said.