Hiddleston, who plays the villainously mischievous Loki, was decked out in his character’s all-black wardrobe, but couldn't keep from smiling as he shook hands and met fans alongside Hemsworth, who brought along his long blonde locks and Thor's mighty battle hammer, Mjolnir.
The superstars met with kids, posed for photos, and hung out with the medical staff during their visit.
The nurses, doctors and office staff could not have been more excited to snap selfies with the superstars, which they shared to the Lady Cliento Children's Hospital Facebook page.
This wasn't Hiddleston's first time paying a visit to the hospital, either. The 35-year-old Emmy nominee dropped in back in July, before filming on Ragnarok began, and was accompanied by his girlfriend, 10-time GRAMMY Award winner Taylor Swift.
Taylor Swift met children at the hospital in Queensland today, taking selfies left & right! So precious ❤️ 💞 pic.twitter.com/sSjbUaht3U