On Sept. 13, the "Serendipity" star gave fans an update on her health.
"Feeling a lot better," she captioned a Instagram selfie from the hospital. "Thank you so much for your kind messages and love x."
Kate, 48, didn't give any more details about her situation.
On Sept 10, TMZ reported that Kate was taken to a Las Vegas hospital via ambulance after suffering from severe back pain. The actress had been in Vegas filming a movie.
After her health update on Monday, Kate's celebrity pals wished her well on Instagram.
"Oh my gosh! Friend!," Sarah Silverman commented. Andi MacDowell wrote, "Oh dear I'm just catching up I hope everything's OK."
Jamie Foxx said, "Get well lioness," and Paris Hilton added, "Feel better beauty."
Prior to her health emergency, Kate shared an image from Vegas. In the snap she donned a white dress, fishnet stockings and black boots. She hiked up one side of the dress to expose her leg.
"Oops #Vegas," she wrote alongside the photo.