Rihanna Goes Blonde, Sexy Striptease at NYC Pink Elephant Nightclub [PHOTOS]: RiRi Over Chris Brown Break Up?

Rihanna proves that blondes do have more fun! The "Diamonds" songstress walked out with a dramatic new hairstyle in NYC on Monday evening (May 13). But no worries for those fans who dig RiRi's naturally brunette locks, the funky do' was just an uber-blonde wig. Earlier in the day, Rihanna had some on a photoshoot with MAC cosmetics. Later on, RiRi decided to continue "shining bright like a blonde" on the way back to her Manhattan hotel room. Just the night before, the "S&M" beauty was spotted partying at NYC's popular Pink Elephant nightclub... and she allegedly performed a sexy strip tease for fellow partiers! Looks like RiRi's officially over her break up with Chris Brown!

On Monday and Tuesday, Rihanna sent out these tweets:

@rihanna: "2 day shoot for my upcoming Autumn/Winter collections with River Island was flawless! My models looked so damn good! Foreign chicks errwhere."

@rihanna: "And that's a wrap on another #MAC shoot!! 2 in 1 day!! Thats my damn team!!!"

Which helps to explain this funky look:

Do fans approve of the platinum blonde bob?

RiRi's known to be a little crazy... with her ever-changing style AND wild partying ways. The night before the photoshoot, Rihanna was spotted at NYC's Pink Elephant, dancing and stripping...

One New York Post eyewitness reveals, "She jumped on a banquette as music thumped, and started peeling off her jacket... then her shirt... to ultimately reveal a red tube top."

RiRi didn't arrive to club until about 2 a.m. (with 20 friends in-tow). Things slowed down around 4 a.m., but club owner David Sarner kept the music pumping for RiRi and her gal pals for a few extra hours.

“They didn’t serve any more alcohol, it was just so Rihanna could keep on dancing,” another insider claims.

Oh, and the "Stay" songstress dropped $2,000 plus a $500 tip.

Guess the single life's treating Rihanna pretty well!