Washington, April 18 : Pop princess Britney Spears reportedly kicked off the West Coast leg of her "Circus" tour with an erotically charged but energetically flat gig at the Los Angeles Staples Center on Thursday.

The show involved less-than-subtle sexual innuendos, including quite the pole performance, a striptease, and plenty of pelvic thrusts and gyrations.

Those attending the concert also saw a racy video in which the bottle-blonde babe gets down with one of her masked dancers while donning lacy lingerie.

However, according to reports, Britney's dance performance was not very impressive.

"She (Spears) is pretty exhausted. She''''''''''''''''s rehearsing, performing and still playing mom," Fox News quoted an inside source as saying.

Britney donned nothing more than itsy-bitsy bikinis throughout the provocative performance.

She didn''''''''''''''''t say much either, and just thanked the crowd for coming out.

"It means a lot to me," she quipped before launching into the highlight of the entire production - the slow ballad "Everytime".

Britney brought a smile to people's faces when she sang `Baby One More Time' just before closing out. (ANI)