Britney Spears is not planning to sing live during her two-year Las Vegas residency, according to a source, who told New York Daily News that the pop princess would lip sync all her performances.

Last week, Spears announced on “Good Morning America” that she will do a two-year residency at Planet Hollywood Resort & Casino starting Dec. 27, where she is expected to perform about 50 shows. It is believed Spears will rake in $30 million for her two-year stint.

“Britney does not sing. She is being paid a lot of money to lip-sync,” the source told New York Daily News. “Her fans are none the wiser, but it is disingenuous of her to take their cash and not deliver a proper performance.”

According to reports, tickets are expected to be priced between $59 and $179.

“She hasn’t sung live for a couple of years,” the source added. “If the crowd thinks they are being cheated then there is likely to be an uproar, but then again look at the success of Cirque du Soleil’s Michael Jackson shows. The performers in that production don’t sing live, and it has been a runaway success.”

This is not the first time Spears has been accused of not singing at her concerts. During Spears’ 2009 “Circus” tour in Australia, fans walked out after they realized she was lip-syncing. And, early this year, she was accused of not singing live in the recording studio as well.

But, a representative of the singer quashed these rumors and said that Spears would be singing live for all her shows.

"Britney will be singing. As stated before, she is in vocal training -- has been for months, and she is and has been working with a choreographer for her Vegas 'Britney: Piece of Me' show. Her new album, which is out on Dec. 3, will also represent this. Any source to the contrary holds zero truth," the representative said, according to MSN Entertainment