The singer, who arrived at the charity event which raises money for musicians in need sans beau John Mayer, was interrupted by two young fans who asked to take a picture with her as she was talking to director J.J. Abrams. But that wasn't all: the pop star, who later hung out with Elton John, was approached by even more fans in the lobby at the show.
Other MusiCares attendees included Faith Hill and Tim McGraw, who arrived hand-in-hand before the dinner began. (McGraw and Hill later performed "Tougher Than the Rest" during the concert.)
As for the man of the hour, when the auction slowed The Boss offered up the ultimate prize: himself.
While composer David Foster urged the crowd to bid on a guitar signed live by many of the music stars in attendance, Springsteen grabbed the mic himself and threw in a few very personal extras to amp up the bidding.
First, he offered a one-hour guitar lesson and a ride in the sidecar of his Harley Davidson. Next, he added eight tickets to an E Street Band show of the bidder's choice, plus backstage passes and a backstage tour he promised to conduct personally.
"So dig in you one-percenters," he urged the audience with a smile. Springsteen raised the winning bid to a whopping $250,000 by making it a family affair, promising to also include "a lasagna made by my mother!"
Auction winner Tracey Powell, a "full-time mom," was so thrilled that she ran to Springsteen and kissed him on the lips – twice!
"I'm a Jersey girl and that's why I did it," Powell, who now lives in California, tells PEOPLE of her generous bid. "He's an amazing musician and I've followed him for years. Plus it was for an amazing cause that I'm so happy to support."
Jon Stewart hosted the evening's entertainment, a the Springsteen tribute concert that featured artists Elton John, Mumford & Sons, Sting, Neil Young (who sang "Born in the USA"), John Legend, Natalie Maines, Ben Harper, Emmylou Harris, Kenny Chesney and others, who performed some of Springsteen's classics.