Five hundred tickets to Monday's "Becoming" signing were scooped up by customers at Politics and Prose bookstore for the sold-out event announced just days before it was held, organizers said.

Some of the first Obama fans in line told ITK they had been camping out in the chilly D.C. temps outside the literary landmark since 1 p.m. for the signing, five hours before it was poised to begin.

Obama, 55, smiled as she greeted guests one by one. The event quickly turned into a love fest of sorts, as fan after fan lauded the former first lady.

"I want to thank you so much for being a role model," a young woman who said she was an obesity researcher told Obama through tears. "We miss you!"

"I'm here," Obama, whose Washington home is less than four miles from the bookstore, replied with a grin. "I'm right up the street!"

Obama fist-bumped with one attendee, while another man shared that he met his fiancée at the bookstore where Obama was having her event. He then invited the ex-Executive Mansion resident to his upcoming nuptials, saying, "You're welcome to come."

Obama's book, released last November, has sold more than 11.5 million copies worldwide, according to its publisher. “Becoming” was declared the bestselling hardcover book of 2018 shortly after it was published.