She turns 33 on Thursday and Sheridan Smith is planning an evening of fun and mischief to mark the occasion.
The award-winning actress is preparing for a long night ahead, taking to Twitter on Wednesday to indulge in a spot of banter with her A-list party guests, who include Jessica Chastain and Dan Stevens.
The C-Word actress kicked off her social media spree by sharing a busty flashback snap from a previous year, initially uploaded by a pal alongside the caption, 'perfect birthday outfit'.
Sheridan can be seen dressed in a low cut vest top over a black bra as she flashes a seductive look at the camera while playing with her hair.