The 52-year-old recently reprised her role as martial arts-trained assassin Elektra Natchios in a cameo in Deadpool And Wolverine.

She posted multiple videos about her lift ordeal on Instagram with the caption: "Baby's first Comic Con: a short story."

The timing of the footage is unclear, but Garner attended the Comic-Con panel for Deadpool And Wolverine earlier in the week.

At two minutes, Garner said: "Hey guys, we're stuck on this elevator. I could use a Wolverine, I could use a Deadpool. I could use someone... we're looking for stairs.

"Thanks for having us here. My first Comic Con. Bye for now."

At 11 minutes in, she said she was getting "toasty" and "shvitzing", a word for sweating, in the cramped space.

Singing in the lift

When she posted a video from 45 minutes trapped in the lift, she began singing the children's counting verse 99 Bottles Of Beer.

By the one-hour mark, she was quietly reciting the Madonna hit Like A Prayer, which is part of the soundtrack in Deadpool And Wolverine.

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Still smiling, Garner then showed her rescue at one hour and 12 minutes, and cheered as the doors were forcefully opened by firefighters.

Deadpool And Wolverine, featuring Hugh Jackman as Wolverine and Ryan Reynolds as Deadpool, has a host of cameos including Wesley Snipes as vampire hunter Blade, and Chris Evans as Marvel superhero Captain America.

Garner first played Elektra, who uses the Okinawan sai weapon, more than 20 years ago in the 2003 film Daredevil, opposite her former husband Ben Affleck.

She returned to the role in the 2005 film Elektra, which was poorly received by critics.