In awkward scenes, Ellis was seen getting up on the kitchen table and dancing for her co-stars as she rang in her 20th year.
Wearing a tiny checked mini-dress, the budding reality star even flashed her bum at her fellow housemates as she writhed her hips to the music.
Fans were left in stitches by the scene, which occurred a matter of hours before Ellis was given the boot from the show.
One wrote: "I can’t believe what I’m hearing... It’s Ellis 20th birthday in the house and she gets removed on her birthday!"
Big Brother's Ellis Hillon flashes her bum during sexy table dance as she celebrates her birthday in the house before her dramatic removal
Another shared a funny meme of Jennifer Lawrence with the words: "Ellis was removed on her birthday" and a string of laughing emojis.
One fan posted a GIF of Sharon Osborne cackling with laughter, beside the caption: "Life comes at you fast when you're on #bbuk
"One minute you're dancing on the kitchen table to celebrate your birthday and the next you're getting kicked out for being racist and sectarian. Poor Ellis!"
Another quipped: "Ellis is going to get birthday bumped out of the house!"
Another joked of the producers: "Ellis got kicked out #BBUK on her Birthday. Big Brother ain't going lightly this year!"
Show bosses gave her the boot after conducting an investigation into her social media activity, when a number of vile posts surfaced on Twitter.
One of the messages included a sick post about the 2001 terrorist attacks on the Twin Towers, which included several expletives as well as a vile racial slur.