Blundering Britney Spears' kids drove hotel guests mad by running riot in a $1,300-a-night suite as their mom sang at a disastrous gay pride gig 70 miles away, RadarOnline.com has learned exclusively!
The Toxic hitmaker's 'home alone' sons were left in the care of security as Britney strutted around on stage in a sparkly bra and suspenders.
But her minders were no match for Britney's tearaway lads Sean Preston and Jayden James.
An insider told us Sean, 12, and Jayden 11, insisted on playing music at "full blast" and stomping around their suite and hotel corridors "yelling and screaming."
A posh elderly couple – who had forked out a fortune to spend a relaxing night in a room on the floor below Britney's brood – grew so furious they complained to hotel staff about the "two Hollywood brats", and recommended their parents give them a "good slap."
Sean and Jayden got up to mischief at London's five-star Café Royal Hotel on the city's upmarket Regent Street during their mom's performance at Brighton Pride for a crowd of up 60,000 people.
When the singer got back to her hotel in London she found out her kids had caused such a stink other guests were complaining.
"She's known as one of music's biggest divas, but she hates it when her kids behave that way – especially after all her custody troubles over them.
"She gave her boys and her security a proper dressing down over the complaints and told them to shape up."
The insider went on: "The couple who complained were a quiet, elderly pair and had spent a lot of cash to relax at the Café Royal.
"They had no idea who Sean and Jayden's mom was, but they wouldn't have cared anyway.
"They heard the kids' accents, and told hotel staff they sounded like 'Hollywood brats' who could benefit from some 'good old fashioned parenting' – including a clip around the ear.
One of Britney's closest pals and ex-boyfriend Adnan Ghalib, 45, told in April how the singer was "treading on eggshells" as a mom as she didn't want to do anything that would lead to her losing custody of them to their dad and her former husband Kevin Federline.
Our source said: "Adnan's right – Britney is still really nervous she comes across as a good mother in public so a judge can never remove her children.
"So any incident like them misbehaving and causing trouble while they are on care puts her on edge, even if it is a minor incident like them messing around at a hotel.
"At the end of the day, they are just kids who were excited on a trip away."
But the source added Britney was "fuming" over the kids' misbehavior, as she had gone "out of her way" to take her lads sightseeing in London on Saturday before she left for her concert – thinking walking around the capital in record-breaking heat would exhaust them and leave them needing an early night while she performed in Brighton.
- Britney Spears Ready to Write Ex Sam Asghari a Low 6-Figure Check to Settle Divorce After Judge Warns Pop Star's Ex To Hurry Up
- Britney Spears’ Divorce at Risk of Being Dismissed After Ex Sam Asghari Blows Off Court Hearing
- Britney Spears' Mom Slammed for Showing Off Pop Star's 'Creepy' Doll Collection to Prove She Didn't Toss Them: 'Seriously!?'
Before her gig, Britney and her boys were snapped at Buckingham Palace – with the pop star going virtually unnoticed as she mingled with thousands of other tourists.
But the insider told RadarOnline.com exclusively the day out only left her lads" excited and full of adrenaline", adding they also ate sugar and junk food when she was away from the hotel.
The singer was married to their dad Kevin Federline, known as 'K-Fed', for two years before she filed for divorce in 2006.
Her split from the former backing dancer – previously hired by her ex-boyfriend Justin Timberlake – marked the start of Britney's most infamous annus horribilis.
Months after she texted Kevin, now 40, to let him know she had filed for divorce, Britney found herself snared in a poisonous custody battle over their sons Sean and Jayden.
These days, Britney and Kevin – now a dad of six – share joint custody of Sean and Jayden and her Instagram documents an apparently 'happy families' lifestyle with her boys.
But the kids are now again at the center of an ugly row between their parents.
Kevin recently demanded an increase in the $20,000 a month he already receives from Britney for the upkeep of their two kids.
He based his demands on Britney's rising income due to her Las Vegas residency and worldwide tour and his lack of steady work as a DJ.
But the singer claimed Kevin's requests for additional money are for his other four children, as opposed to their two sons.
We pay for juicy info! Do you have a story for RadarOnline.com? Email us at firstname.lastname@example.org, or call us at (866) ON-RADAR (667-2327) any time, day or night.
Get the exclusive celebrity scoop on all the stars you love before any of your friends by subscribing to our new podcast Straight Shuter below!