Britney Spears has been secretly skipping rehearsals for her approaching world tour because she is embarrassed by her lack of dance skills.

The “Womanizer” singer, known for her fancy footwork, has sparked concern among tour organizers after repeatedly ditching scheduled rehearsals.

A source told Us Weekly Magazine: “She missed some early dance practices and wasn’t dedicated about turning up at meetings.”

The 27-year-old is said to be particularly reluctant to perform in front of longtime choreographer Wade Robson, who she has worked with since 1999.

“She didn’t want him to see that she’s not as good as she used to be,” the source added.

“The Circus Starring Britney Spears” kicks off in New Orleans in March.