Back in 2012, Phoebe Molnar underwent open heart surgery at Great Ormond Street Hospital as a two-year-old.
Now nine, Phoebe is 'flossing' in locations far and wide, including Watford's own training ground, in order to raise money for the children's hospital.
“I am flossing in as many places as I can for Great Ormond Street Hospital Children's Charity, because I want to help other children get fixed,” she said on her JustGiving page.
After a bit of flossing with players from the Hornets' Academy, Phoebe even had a surprise visit from Watford captain Troy Deeney.
You can watch the video of Phoebe's visit, and find out how to donate to GOSH, below.
Text: FLOS54 £2, £5, or £10, to 70070.