The couple’s heated romance came to an end in 2012 following the end of the Twilight saga and final instalment Breaking Dawn: Part Two.
Eagle-eyed witnesses described how the exes, who dated for almost four years after falling in love on the set of the fantasy movie, appeared together as “friends.”
The fan took on twitter to share her excitement: “Was just at bar enjoying my friends birthday and in comes Robert Pattinson which blew my twilight mind up, and then Kristen Stewart walked in and now I'm reliving my high school twilight fantasies.”
She later added: “Wow! Did not expect this response! It wouldn't have been cool to take a picture of them, they just seemed like two friends hanging out.”
Another excited fan elsewhere tweeted: “When you're just innocently at a bar in LA and suddenly Robert Pattinson and Kristen Stewart appear right in front of you. EDWARD AND BELLA IN THE SPARKLY FLESH.”
“They seemed like two friends hanging out at a bar. And it was midnight... we all looked rough imao.”
Other fans were quick to express their hysteria over the nostalgic reunion.
One wrote: “Kristen Stewart & Robert Pattinson spotted at a bar in LA MY HEART LEFT MY CHEST.”
Another said: “You awoke the fangirls/boys.”
Meanwhile other users speculated if the tweet was “fake news.”
Pattinson played dangerous heart-throb Edward Cullen in the passionate vampire fantasy whilst his co-star Stewart played his human-half Bella Swan.