Singing Sensastion Lady Gaga Behaves Unusual.

 Lady Gaga whose real name is Stefani Joanne Angelina Germanotta shows signs of `crazy` behaviour when she is stressed and the pop diva`s friends and entourage are worried that her bizzare habits are escalating out of control.

The 25-year-old singer refuses to pour her own drinks or sit on a chair someone else has previously used and insists on having her own crockery so she can be sure that no one else has used it, reported Contactmusic.

Lady Gaga

"She even has someone on hand to pour her drinks because she thinks pouring for oneself is bad luck. She has 28 tour buses, 140 staff and an even number of tables, chairs, glasses and plates in her backstage area," a source said.

"She often suffers bouts of crazy behaviour when she is tired and stressed. It`s certainly happening now."

Lady Gaga

The `Born this Way` hitmaker has been accompanied round the world by boyfriend Luc Carl since they reunited last July, but she regularly insists on booking them separate hotel rooms because she thinks sharing a bed every night would damage her creativity.

Lady Gaga with her boy friend Luc Carl

"She calls it her 16th century monarch night as she doesn`t always allow Luc to sleep in bed with her," the source added.