Britney's jet should be arriving in Vegas about now ... Our source confirms that Brit was with two of her dancers in the limo on the way to the airport and that perhaps a couple more people (dancers?) met her at the plane.

More details coming in ...

  • she was with three girls -- two blonde, one brunette

  • britney herself is blonde tonight

  • brit is wearing a dark red dress

  • the gang listened to hip-hop music in the limo on the way to the airport

  • brit was super excited and in a great mood