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Rihanna vs. Lady Gaga: Music divas kick off summer with 'Today' and 'GMA ...

It was a battle of the fashion-forward divas Friday morning in New York City.

While Rihanna was kicking off "Today's" Summer Concert Series in Rockefeller Center, Lady Gaga was ziplining her way into Central Park to celebrate "Good Morning America's" own Summer Concert Series.

RiRi woke up midtown when she marched down the street in a sexy leather get-up, followed by her back-up dancers, to perform her newest hit, "S&M."

The Barbadian beauty kept her composure during a slight setback when she was pulled by eager fans behind the barricades as she was shaking their hands. Thankfully for her dancers who had to take over security guard duties for a moment, Rihanna was back on her way up to the stage.

The rest of the singer's concert went off without a hitch as she delivered more of her hit songs, including "Only Girl (In the World)," "What's My Name," and "California King Bed."

In between sets, RiRi discussed what went into making her latest album and how much better it sounds if the music is turned all the way up.

"'Loud' symbolizes all of the energy that went into this album, we just had such a great time - we were making it on tour," she told hosts Matt Lauer and Meredith Vieira. "So, it was all about music and I've only listened to my music loud. If it feels good that way then it's going to feel good to the fans."

PHOTOS: BATTLE OF THE MORNING SHOW DIVAS

About a mile uptown, Gaga was blasting her own loud music as she continued promoting her new album, "Born This Way," with a five-song set on "GMA."

While Rihanna's opening number turned heads, Gaga's grand entrance was hard to top.

Wearing a sheer red and black bodysuit and headscarf, the eccentric songstress ziplined over the heads of her adoring "little monsters" toward the main stage while singing her oldie, but goodie "Bad Romance."

Gaga had her fair share of costume changes on 'GMA.