Is SuBo Losing It?

Those close to Susan Boyle are still worrying whether or not the Britain’s Got Talent star is cut out for the biz.

Boyle’s erratic Heathrow airport freak out wasn’t the singer’s first display of odd behavior last week either!

According to sources, Boyle was complaining from the minute she walked into The Mill Cafe in West Lothian last Monday.

SuBo allegedly whined about her personal assistant who told the singer to go on a diet and then scarfed down a Mars bar in protest!

“…She grabbed a Mars bar and said, “I’ll show her” and then scoffed it,” said one cafe employee.

Growing girls need to eat!

[Image via WENN.]