Stand Up to Cancer: Taylor Swift Cries during her performance as she Debuts New Song

Celebrities from around the world and around every industry came together last night for Stand Up to Cancer, a telethon on every major network that was dedicated to raising money to combat this terrible disease.

Among the highlights, Taylor Swift debuted the track "Ronan,"(whose proceeds will go to cancer research) a single she wrote with Maya Thompson, whose 3-year-old son Ronan died of neuroblastoma last year.

It was a much different kind of performance for Taylor Swift at Friday's star-studded Stand Up to Cancer benefit at the Shrine Auditorium in Los Angeles.

One day after her sexy, crowd-diving rendition of "We Are Never Ever Getting Back Together" at the MTV Video Music Awards, the 22-year old singer brought the audience and herself to
tears after the performance, as the Grammy winner was seen wiping her eyes as she walked offstage.

Among the other attendees for the fundraiser, which was broadcast on all four major networks, was surprise guest Robert Pattinson; Kristen Stewart's estranged beau appeared poised and serene speaking onstage for the cause.

Presenting a video presentation, Justin Timberlake (whose fiancee Jessica Biel was also on hand) was similarly emotional.

Others on hand included Alicia Keys, Gwyneth
Paltrow, Jennie Garth, Halle Berry, Minka
Kelly, Julia Roberts, Tom Hanks, Samuel L.
Jackson, Stacy Keibler, Gabby Douglas, Sofia
Vergara, Seth Rogen and Katie Couric.

The night also served as a tribute to legendary
movie and TV producer Laura Ziskin, who died
of breast cancer in June 2011.

Elsewhere:

• Children diagnosed with cancer spoke on their illness, including three-year old Justin Miller who said: "I don't really think about me passing away. But if I do, I'm taking my Legos with me."

• Alicia Keys, Coldplay and Tim McGraw all performed.

• Katie Couric, who lost her husband to colon cancer, took a swipe at Chelsea Handler while espousing preventative screening and colon health and talking about a cleanse that "comes in vanilla, strawberry... I think Chelsea Handler even has one that's vodka-flavored. It is not the tastiest beverage in the world, but it is a small price to pay for potentially saving your own life."

• Robert Pattinson urged viewers to donate and support cancer research.

• I also crave your indulgence for you to continue to pray for dear and beloved debbie whose case we all witnessed some weeks ago.

• I need you all to be strong,stand up and let's fight this cause together. STAND UP FOR CANCER.