The loud chants of "Spidey! Spidey!" greeted each actor's arrival.
Oscar winner Jamie Foxx, 46, who plays new villain Electro in the upcoming The Amazing Spider-Man 2, was the first to step onto the red carpet.
The lovely Emma Stone, who plays Spidey's girlfriend Gwen Stacey, was next to show up.
As the main star of the night, Spider-Man actor Andrew Garfield, followed suit, the chants and screams from the hundreds who had gathered at the Marina Bay Sands Skating Rink on thursday reached a dizzying, deafening crescendo.
The trio lapped it all up, smiling, waving, signing autographs and taking selfies with thrilled fans.
At one point, Garfield, 30, was asked if he was wearing his Spidey suit underneath.
To which he playfully undid a few buttons on his shirt to show... his chest.
The screams got louder.
"This is really overwhelming," said Stone, 25, to the gathered fans at a short question-and-answer session on the red carpet.
"Thank you for coming out and loving us and this movie as much as we do. I'm having such a great time."
Garfield also thanked everyone profusely for welcoming them with such open arms.
When asked what he had been doing in Singapore since their arrival on Wednesday night, the British actor replied that he had the "tastiest chicken rice ever" at the Maxwell Food Centre. That comment was, of course, greeted with more cheers.
The stars were here to promote The Amazing Spider-Man 2, which opens here on May 1. They were joined by director Marc Webb and producers Avi Arad and Matthew Tolmach.
The group was also here to be part of the Earth Hour 2014 events, which will see Garfield and Foxx giving a talk on sustainability at Commonwealth Secondary School today.
The events will culminate with the cast switching off the lights across the Marina Bay skyline at The Float@Marina Bay at 8.30pm tomorrow - part of WWF-Singapore's flagship Earth Hour event.
Having these Hollywood stars in town was certainly a pleasant surprise, a sentiment echoed by the fans who had gathered on thursday.
"I'm a big fan of Emma Stone, so when we read on Twitter that they were coming, we had to be here," said Sarah Effa, 16.
"This is such a big deal for us movie fans," echoed her friend Dina Zul, also 16.
The students had been waiting since 4.30pm for a glimpse of their idols, who were not scheduled to appear until 8pm.
Mr Steven Teo, a 36-year-old manager, was also an early bird, having taken the day off work to be at the event with his family. His five-year-old son, Leroy, was wearing a Spider-Man T-shirt.
Possibly the happiest people in the crowd had to be Faith Lim and her friends, Alyssa Chua and Samantha Toong.
The 17-year-old students had a choice spot near the stage. Faith had a good vantage point to see the stars as she was perched on Samantha's shoulders most of the time.
Faith even managed to get Stone's autograph.
"I have no words to describe this experience. It's such a great opportunity to see (Stone) in person, let alone get an autograph!" she said excitedly.
"Sadly, we couldn't get Andrew's and Jamie's autographs."
As for Mr Teo, he was his kid's hero as he managed to get Garfield to pose for photographs with Leroy and his six-year-old sister, Steffie.
"This is indeed a truly amazing night," he said, beaming as his two children hugged their daddy.
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