The former TOWIE star is among the celebrities competing on the BBC One gymnastics show, which kicked off on Saturday night.
Despite undergoing some pretty grueling training that left her covered in bruises, the ex-reality star found herself at the bottom of the leaderboard after her opening performance.
But, remaining upbeat, she's told fans: "First show. Nerves got the better of me but I still had a great time! Bring on the next week and aerial hoop."
She added the hashtag: "Only way is up."
While the judges didn't rate Lucy's performance too highly, her Instagram fans were quick to assure her they'd loved watching her perform.
"I thought it was a great performance and I can't wait to see you this week," said one. Another added: "You were so good you should have got a higher score."
Other stars competing on Tumble include Girls Aloud's Sarah Harding, former Sugababe Amelle Berrabah and EastEnders actor John Partridge.
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Check out the full Tumble cast below:
Copyright: BBC Colin Bell/Kaia Zak