Rihanna and friends have a wild Vegas week! (Photo : Twitter: @Rihanna)

Rihanna is definitely "Rated R."

It's not even the weekend yet and Rihanna has already enjoyed a wild time in Las Vegas. The 24-year-old pop star continues to live her life in the fast lane by partying with strippers and shooting guns.

"I lick the gun when I'm done cuz I know that revenge is sweet," Rihanna quoted her own song, "G4L", in honor of her visit at a gun shooting range. Rihanna and her friends visited Guns and Ammo Garage for some risky action. According to the Daily News, the singer shot off a few full automatic rifles including an AR-15, a M4 carbine, and a Squad Automatic Weapon (aka SAW).   "Bad gals do it well! We got our guns in the muthafuckin air," the excited pop star wrote.

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Rihanna shoots in style. Music's #1 bad girl wore a sexy pair of strappy sandals as she shot targets.

The naughty pop star also made her way to a strip club, something she really enjoys. Rihanna tweeted a racy photo of a topless stripper between her legs. The pop star stuffed cash in the blond stripper's mouth and threw dollar bills all over her body. "Bands ah make her dance," the wild singer tweeted, referencing rapper Juicy J's stripper anthem.

That wasn't Rihanna's first time with a stripper. Back in May, the starlet shared photos of her tossing bills at two scantily-clad exotic dancers. Rihanna says that the strip club is the "best stress reliever."  At the time, she tweeted, "Best stress reliever = $tripper$. Kill it Tip it #Cake."

Rihanna dons weed-printed socks

After a scandalous Thursday night at the strip club and Friday morning at the shooting range, Rihanna mellows out with friends Friday evening. The star relaxed poolside wearing a teeny tiny bikini which shows off her bold chest tattoo.