Katy Perry Suprises Taylor Swift at the Staples Center

Taylor Swift gets a surprise from gal pal Katy Perry on stage at the Staples Center during her Los Angeles concert on Thursday night (April 15).

JJJ reader Aya writes to us about the concert, “I went to Taylor Swift’s show at the Staples Center last night and Meaghan Martin sat one row in front of me. She was nice enough to take a picture with me and she remembered me from when I met her a few weeks ago at the KCAs (she also took some time to talk to me and my friend). She seemed to be really having fun at the show.”

Aya continued, “Katy Perry was also there at the show, and Taylor performed ‘Hot N’ Cold’ and Katy came out to sing it with her. The whole show was amazing. After the show, I met Melissa Ordway that plays Ashley in The Last Song. She was really nice and asked us what our names were and if we had fun at the show. The show was absolutely amazing and Taylor did great.”

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Katy Perry is Studded Sexy

Katy Perry smiles for photographers as she heads into a studio in New York City’s Chinatown on Tuesday (April 13).

The 25-year-old singer was spotted out in NYC yesterday wearing a dress printed with an image of a thunderstorm!

Over the weekend, Katy and fiance Russell Brand, who were looking for a place to call home in NYC, checked out an East Village apartment.

MORE PICS +15 of Katy Perry wearing a studded dress in NYC…

Rihanna spilled details about Perry & Brand’s forthcoming wedding!

Rihanna has spilled details about Katy Perry and Russell Brand’s forthcoming wedding!

While speaking to Ryan Seacrest on Thursday (April 8), RiRi said she was prepping for Katy’s bachelorette party but had to live up to some pretty high standards.

“I have to come up with something cool ’cause she’s getting married in India,” Rihanna shared, “so I’m, like, what do I do to match that for a bachelorette party?”

Ri also shared that the party will be “at the end of the year” before the wedding.

Katy posted this photo of Russell on her Twitter recently with the caption, “Bridezilla much?” Sounds like both of them are getting excited about the wedding!

Gotcha Perry! (videos)

Hahaha!

Katy Perry got a slime on stage while presenting an award with Jonah Hill at Nickelodeon’s 2010 Kids' Choice Awards held at UCLA’s Pauley Pavilion on Saturday (March 27) in Los Angeles.

Then, meeting the teen sensation star,Justin Bieber the KCAs, Katy shared the below pic of her kissing him and joked, “Told you I would tap that. Yummy.”

And click here for Perry's and her fiance's photos, Russel Brand walking wrapped around each other as catch a departing flight out of LAX airport on Sunday (March 28) . ~ 7 pics