famous pop star using the rock and roll fashion of the lead guitarist for guns n roses slash

Rihanna is ready to rock in Slash tribute costume

Pin for Later: Look Back at All of Last Year's Memorable Celebrity Halloween Costumes! Jessica Alba as Slash Jessica and her girlfriend dressed up as Slash and Axl Rose.

Jessica Alba as Slash

All the 2014 Celebrity Halloween Costumes!: Halloween celebrations came to a peak on Friday night, but there have been tons of celebrities out and about in their hottest, creepiest, most adorable costumes since last weekend.

Rock'n'roll: Jessica Alba (R) and pal Kelly Sawyer dressed as Slash and Axl Rose from Guns N' Roses

Lily Allen goes as Dr. Luke for Halloween amid claims he abused Kesha

Gal pal: She attended the star-studded event with friend Kelly Sawyer, with the two dressed up as Slash (Jessica) and Axl Rose (Kelly) from rock band Guns N Roses

Henry VIII (1491–1547)  by Hans Holbein the younger  (studio of)

Portrait of King Henry VIII of England, unknown artist after Hans Holbein the Younger, Petworth House. An Armenian rug is on the floor.

Slash. Does this guy have to work at looking this naff? Or is it natural?

Slash released a special-guest-filled album solo called called Slash in March. Four of the five members of the Appetite for Destruction era Guns N' Roses lineup appear on the album: Slash, Izzy Stradlin, Duff McKagan and Steven Adler.