Could a celebrity feud be brewing in Las Vegas between Shania Twain and Tim McGraw & Faith Hill? Gossip blogger Perez Hilton has heard that Shania is upset by the timing of Tim and Faith's Vegas engagement.

The insider said, "It’s taken Shania everything to get to this point, and now, along come Faith and Tim to spoil her party. She knew they were coming, but she didn’t think they’d try to steal the spotlight. Shania got a big, glittery show and the determination to become Las Vegas’ number-one ticket.”

Shania opened her residency at Caesars Palace on December 1st.

  Tim and Faith began their run at the Venetian on December 7th.

   Source: Premiere   Photos: Getty Images