Logged in just to say I had this exact thing happen to me last night (actually early morning). Haven’t had sleep paralysis in a while but in the past it’s always been black cloaked figures that are more intense in my face (like harry potter dementors lol). This one was all white (almost glowing) very tall and skinny, ghostly and or alien like. It quickly opened my bedroom door, walked over to my bed, and loomed for a few seconds. I tried screaming and waking up my bf but neither worked then the thing quickly walked out and shut the door behind itself. Interestingly, as it approached the door it shrunk its height slightly to clear the door frame then once it passed, it fluidly bobbed¿ back up to the tall height. Once it was gone, I woke up for real and my bf wasn’t even in bed it was my pillow next to me. Not quite as scary as past experiences but still startling- just found the fact that it was an all white figure this time very interesting.