As she partied with boyfriend Greg Wood in London’s the Groucho and Century clubs, Sheridan looked every inch the rock chic, wearing a black outfit, leather jacket and Ray Bans, all set off with some punky looking hair.
But as she brought in a new year with her pals Jeremy Edwards, Charlie Brooks, and others, the star revealed a very different look a few years ago - as she celebrated her 30th birthday.
After a fan tweeted a picture of the actress from her 30th birthday night out, where she sports a very large cleavage shown off by her low cut tank top, Sheridan wrote: ’NOOO! Very drunk 30th. never again!!’
The fan seemed to disagree however, after tweeting: ‘Greatest birthday outfit ever!’
Sheridan was quick to distract attention to her current celebrations, where she looked overjoyed to be surrounded by beaming family and friends.
The star is currently filming The Hutsman, a prequel to the 2012 Snow White and the Huntsman, and shares the screen with Jessica Chastain, Dan Stevens, Nick Frost and Rob Brydon.
Happy Birthday Sheridan - it looks like you had a blast!