Washington, June 19 -- Louis Tomlinson's sister, Lottie Tomlinson, is recovering after undergoing emergency surgery during a trip to Abu Dhabi.

Lottie, on Thursday, took to her Instagram Stories to share that she had fallen ill on her flight to the UAE.

"So I didn't expect to start my trip like this. But I'm just grateful that I'm recovering now. I fell quite ill on the way here on the plane with really bad stomach pains," she said from her hospital bed as reported by People.

After landing, her condition worsened, and she began vomiting. Lottie explained that a doctor first placed her on a drip, but the pain didn't go away. She was then sent to the hospital, where doctors discovered she had appendicitis.

"Long story short, I went to t...