Britney Spears has been left shamefaced after her overbearing dad, Jamie Spears, effectively banned her from having any contact with old party pal Lindsay Lohan.

Britney and Lindsay used to get into lots of pantyless mischief together back in the day, but they’ve barely seen each other since Britney’s breakdown in 2008. The girls tried to rekindle their friendship with a phone call last month, but when Brit’s dad — also her legal guardian — found out he hit the roof, an insider snitched in the March 15 issue of The National Enquirer.

“The trouble started when Lindsay reached out to Britney for advice on getting her career back on track,” a spy explains. “They simply chatted by phone – but when Britney mentioned it to Jamie, he exploded. He instantly phoned Lindsay’s managers and told them he would not tolerate further attempts to contact his daughter.”