TMZ — Filed under: Katy Perry, Rihanna, Hot Vegas Katy Perry strapped a wedding veil to her butt this weekend for one last fling as a single woman -- at a bikini bachelorette party in Vegas with Rihanna and a bunch o... more info

ContactMusic — Katy Perry needs a "liver transplant" after partying with Rihanna for her bachelorette bash.The 'I Kissed a Girl' singer - who is engaged to Russell Brand - enjoyed... more info

Pop Crunch — Katy Perry celebrated one of her last nights of “Singledom” by hooking up with pop BFF Rihanna and taking on Las Vegas for a Hens’ Night that left her begging for a “liver transplant” the next morning on Twitter.The “Teenage Dream” sing... more info

Gigwise — With five each... more info

The Mirror — Supposedly "naked" pictures of Katy Perry have surfaced on the internet, posted by new celebrity blogger, Samuel Dean. more info

The Mirror — Supposedly "naked" pictures of Katy Perry have surfaced on the internet, posted by new celebrity blogger, Samuel Dean. more info

ContactMusic — KATY PERRY celebrated her last days as a single lady on Saturday (19Sat10) - with a wild Las Vegas night out featuring strippers and circus performers.The I Kissed A... more info

ET Online — Katy Perry's weekend didn't get off to a great start with the arrest of her fiancé Russell Brand at the Los Angeles International Airport, but the pop star didn't let that stop her from having some fun with her girls in Las Vegas. ET has the pics fr... more info

Perez Hilton — We wish we had been there!! After months of planning, RiRi treated bride-to-be BFF Katy Perry to a lavish bachelorette party in Vegas over the weekend. Along with 25 of their friends, the two showed up at KA by Cirque du Soleil in a stretch Hummer co... more info

Popeater — Filed under: Music News, Rihanna, Katy Perry The famous guest wore white, and bright red locks, to toast Katy Perry as she frolicked in Vegas this weekend with dozens of friends for her bachelorette party. The bride-to-be and Rihanna posed with Cirqu... more info