Former TOWIE star Lauren, who competed on the show last year, sat in the studio audience to watch Ray Quinn get crowned the 'All Stars' champion with professional skater Maria Filippov.
During the show, Lauren tweeted: "At @daningonice final. Great memories and great people! In audience watching. Looking forward 2 wrap party after x."
The celebrations were in full swing after the show, with past contestants from its entire nine-year history coming back to relive their memories together for one final time.
Lauren partied with the likes of former DOI contestants Shayne Ward, Zaraah Abrahams, Chico Slimani, Daniella Westbrook and Anthea Turner, as well as the professional skaters and the entire production crew.
Lauren, who was voted off in the second week during her stint on the celebrity skating competition, wore a green and pink printed jumpsuit for the occasion.
Reality star Lauren showed off her golden tan having just recently returned from a short trip to Los Angeles.
And the party girl definitely let her hair down, as after enjoying a spot of food, Lauren downed some shots with a member of the production crew!
The final ever Dancing On Ice was a show-stopper last night as all four judges - Karen Barber, Jason Gardiner, Ashley Roberts and Robin Cousins - took to the ice for the first time in the show's history for a special routine.
Even the show's hosts Phillip Schofield and Christine Bleakley slipped into their skating boots for a mini sequence at the start of the two-hour finale.
Legendary sporting duo Jayne Torvill and Christopher Dean also celebrated the 30th anniversary of their Olympic win by performing Bolero for the studio audience.
Fans of Dancing On Ice will now have the upcoming live tour to look forward to, where champion Ray will be showing off his skills on the ice across UK arenas.
Former Brookside actor and X Factor star Ray will be joined by the likes of Hayley Tamaddon, Kyran Bracken and comedian Joe Pasquale for the four-week UK tour, which will kick off in Manchester on 28 March.
What have been some of your favourite Dancing On Ice memories? Tell us below, as the best comment from across the website each week wins £50!
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