Katy Perry poses backstage with the Rolling Stones after performing with them on stage at their concert on Saturday (May 11) at the MGM Grand Garden Arena in Las Vegas, Nev.

The 28-year-old singer helped the guys – Mick Jagger, Keith Richards, Charlie Watts, and Ronnie Wood – out on the song “Beast of Burden” during the show. Check out concert footage below!

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The next night, Katy was spotted leaving the Chateau Marmont with a gal pal.

FYI: Katy is wearing a vintage leather bustier, a Mary Katrantzou skirt, and Giuseppe Zanotti thigh high boots.

Katy Perry rocks the red carpet at the 2013 Met Gala held at the Metropolitan Museum of Art on Monday (May 6) in New York City.

The 28-year-old singer chose Dolce&Gabbana for the huge star-studded event.

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“Tonight for The Met I am channeling the OG queen of PUNK, JOAN of ARC!” Katy tweeted earlier in the evening.

This year’s Costume Institute Gala Benefit – celebrating the opening of the Punk: Chaos to Couture exhibition – is co-chaired by Rooney Mara, Moda Operandi creative director Lauren Santo Domingo, Givenchy designer Riccardo Tisci, and Vogue editor Anna Wintour.

Katy Perry keeps it flowery while attending the after party for the new flick The Great Gatsby held at The Standard on Sunday (May 5) in New York City.

The 28-year-old entertainer was seen posing with Gwen Stefani, Mia Moretti, and fashion designer Vera Wang.

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Eve and Nina Dobrev (not pictured) were also spotted attending the after party.

Earlier in the week, Katy was seen donning a cute printed dress while exiting her hotel in the Big Apple.

10+ pictures inside of Katy Perry and Gwen Stefani attending an after party for The Great Gatsby…

Katy Perry shows off her arms while exiting her hotel on Friday (May 3) in New York City.

The day before, the 28-year-old pop singer rocked a chic gown while attending the unveiling of her third fragrance, Killer Queen, in the Big Apple.

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In 2010, Katy took on the perfume industry by putting out her first fragrance Purr and released her second fragrance Meow the following year.

10+ pictures inside of Katy Perry rocking a cute print dress while stepping out of her hotel in New York City…

Katy Perry sits on her throne while attending the unveiling of her third fragrance, Killer Queen, on Thursday (May 2) at the James B. Duke Mansion in New York City.

“OK! I have been working on my 3rd fragrance for over a year & want to unveil the look NOW! What do u think?!” the 28-year-old singer tweeted before the event. Check out the design below!

“Just had an elegant unveiling of my new fragrance

Katy Perry glams up while walking the red carpet at the 2013 Delete Blood Cancer Gala on Wednesday (May 1) at Cipriani Wall Street in New York City.

The 28-year-old singer took in a performance of the new Broadway musical Kinky Boots earlier in the day with her gal pal Mia Moretti.

“Just saw KINKY BOOTS on broadway & cried w/joy from it’s powerful, beautiful message. Congrats on every of its deserved 13 Tony nominations!” Katy tweeted. “AND if Billy Porter doesn’t win the Tony for best actor in a musical… There will be words… Trust.”

FYI: Katy is wearing a Vera Wang dress, Jimmy Choo heels, a Judith Leiber clutch, and Lorraine Schwartz jewelry.

25+ pictures inside of Katy Perry at the gala and Broadway show…

Carey Mulligan dons a little black dress while attending the Gatsby Exhibition Opening Cocktail Party on Tuesday (April 30) in New York City.

The 27-year-old English actress was joined by her The Great Gatsby co-star Tobey Maguire, who brought his wife Jennifer Meyer.

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Maggie Gyllenhaal was also spotted brightening the party with a white dress.

The exhibition centers around selected costumes designed by Miuccia Prada and costume designer Catherine Martin and includes sketches, production stills, and backstage footage for The Great Gatsby.

FYI: Carey and Maggie are wearing Prada.

10+ pictures inside of Carey Mulligan and Tobey Maguire attending the Gatsby Opening Cocktail Party…

Katy Perry keeps it dressy while attending the Gatsby Opening Cocktail Party on Tuesday (April 30) in New York City.

The 28-year-old entertainer was seen posing with The Great Gatsby actress Isla Fisher, Mia Moretti, and Florence Welch, who has a song on the film’s soundtrack with her band Florence + The Machine.

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Earlier in the day, Katy was spotted hooking arms with her stylist Johnny Wujek in the Big Apple.

FYI: Katy and Isla are both wearing Prada.

10+ pictures inside of Katy Perry and Isla Fisher attending the Gatsby Opening Cocktail Party…

Katy Perry rocks a cute floral print jacket while taking a stroll with her close pal Johnny Wujek on Tuesday (April 30) in New York City.

On the same day, the 28-year-old singer tweeted, “Today my friend Tommy Hilfiger took me shoe shopping #kingofclassic.”

PHOTOS: Check out the latest pics of Katy Perry

Over the weekend, Katy was all dressed up while attending the 2013 White House Correspondents’ Association Dinner in Washington, D.C.

15+ pictures inside of Katy Perry hooking arms with Johnny Wujek during a stroll in the Big Apple…

Katy Perry hits the red carpet at the 2013 White House Correspondents’ Association Dinner held at the Washington Hilton on Saturday (April 27) in Washington, D.C.

The 28-year-old entertainer spent last weekend in Cancun, Mexico to promote her new film The Smurfs 2.

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Katy was joined at an afternoon photo call and an evening party with her co-stars Neil Patrick Harris and Hank Azaria to chat about the new flick, in theaters July 31.

Stay tuned all evening for all the fashion at the White House Correspondents’ Dinner!

FYI: Katy is wearing a Giambattista Valli dress.