She said yes when a 5-year-old fan proposed mid-show. (Before bursting into tears.)
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2
Lady Gaga
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This photo's from the main event (an autograph signing in West Hollywood), but was it truly the main event when beforehand, Mother Monster made sure her little ones were taken care of with a $1,000 pizza party as they waited on line? (It's not the first she's thrown, by the way.)
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3
Taylor Swift
Yeah, your friends got you Agent Provocateur for your bridal shower, but are any of them Taylor Swift? (Who rearranged her schedule last-minute to be with then-bride-to-be with Gena Gabrielle in Columbus, no less.)
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4
Beyoncé and Kelly Roland
Say you're at karaoke with your girls. Say you start singing "Party," because why else are you even there? Say BEYONCE AND KELLY ROWLAND are in the next room over and they HEAR YOU and come over. And say that, instead of saying "Stop murdering my song, please," they join you. This is a true story, and I am dead.
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5
Taylor Swift Again
When Taylor Swift saved Christmas. No word on whether she entered via chimney, but she did give 96-year-old Cyrus "Oldest Swifty" Porter the gift of a lifetime: an acoustic performance Swift gave in his living room.
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6
Prince William
When the Duke of Cambridge traveled to the children's Oak Center cancer unit at the Royal Marsden Sutton Hospital, he met 6-year-old firecracker Daisy Wood. She'd been getting into princess movies lately but joked that William might be too old for her to marry.
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7
Rihanna
If you give Rihanna a DM asking for relationship advice...she might just give it to you—and solid advice at that. (Help me, please.)
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8
Nick Jonas and Demi Lovato
In 2016, the two teamed up for a visit to the Children's Hospital Los Angeles, where they played an acoustic duet, signed autographs, and posed for sweet photos like this one.
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9
Britney Spears
Just imagine being small and having Britney Spears teach your dance class. This was real life for some tiny dancers at an L.A. studio, when Brit showed up to lead a Madonna-inspired lesson. You can watch all of the adorable videos from the class here.
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10
Chris Hemsworth
No good deed goes unpunished—supposedly. Not so in the case of teen Tristin Budzyn-Barker, who found and returned Chris Hemsworth's lost wallet. He was then invited to appear on Ellen, where Thor gave him all the cash he had in the misplaced billfold—and a recommendation letter, even more valuable—on top of the $10,000 Ellen chipped in to help him pay for college.
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11
Mila Kunis
Sergeant Scott Moore asked her to be his date to the Marine Corps Ball on YouTube. To everybody's surprise, she said yes, and they had a blast. "She was she is just a normal girl who is very interested to learn about our history and our traditions and what the ball is all about and she was interested in meeting all my friends," Moore said.
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12
Seth Rogen
Call it Sethception. As seen on Reddit, a fan documented three meetings with Rogen, who, as commenters pointed out, seemed increasingly into it. Here's hoping they keep it going.
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13
Ed Sheeran
Not so keen on the message behind "Shape of You," but super keen on this cute video, in which Ed Sheeran surprised a young, aspiring singer.
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14
Adam Levine
Try not to cry, cry harder. In 2015, Christopher Warner's special education teacher made a viral video explaining why the 10-year-old was Maroon 5's biggest fan. One thing led to another, and the band invited Warner backstage, where they comforted him when he had a panic attack (as seen in the Twitter photo).
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15
Madonna and Macklemore
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You know this one: Madonna, Macklemore, and Ryan Lewis performed "Same Love" as 33 couples got married onstage at the Grammys. Everybody ugly-cried, and it was still a nice moment.