What to wear for egg retrieval

Hey ladies, i am scheduled for an egg retrieval tomorrow this is my first <a href="https://glowing.com/glow-fertility-program">IVF</a> so I don’t know what to expect. The hospital has asked me to bring a dressing gown and socks with me, my question is all the dressing gowns i own are really thick and fluffy and I don’t know if that will be an issue or not. What did you ladies wear to your egg retrieval?