Sydney Sweeney's latest birthday celebration was truly out of this world. Weeks after officially turning 28 on September 12, the Euphoria actress decided to throw a birthday party for herself. According to a source, Ashton Kutcher and Mila Kunis, Jeff Bezos, Seth MacFarlane, Kiernan Shipka, Jessica Alba, Justin Theroux and Jen Meyer were all invited to a Los Angeles event space on Saturday, September 27, to experience a "spaced themed" party. Guests were able to enjoy a wide variety of activities, including a tarot card reader and aura reader.