With the release of her new single, "Come On Over," the countdown is on until Jessica Simpson‘s country album hit shelves in September, and the pop star is definitely feeling the pressure.

“I am so nervous," she tells Extra. "I know this is a part of me that people are going to see that they’ve been waiting to see and I’ve been waiting to let out so it’s very exciting.”

Also exciting is her new purchase — the 27-year-old recently bought digs in Sin City, now her home away from home. “I honestly feel like it was a great place to put my money.”

The city has certainly been good to her. Jess once won $7,000 playing blackjack and was "handing out hundreds, left and right.”

The Texas native was back in Vegas over the weekend for the Palms Palace opening, where her new brother-in-law, Pete Wentz, DJed the party, and Jessica had full faith in the Fall Out Boy for bringing out the big guns on the turntable.

“DJ P did a good job at the wedding. He picked the play list so I trust him tonight," she says.

As for Pete, DJing was the furthest thing from his mind. The dad-to-be was still basking the the glow of his marriage to Ashlee Simpson.

“The best part of being married is I get to hang out with this girl [Ashlee] everyday," he tells Extra.

For more on Jessica and Pete, tune in to Extra tonight!

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