But, Lily's amazing birthday didn't stop there, as she revealed her secret to longevity, and it isn't what we expected.
As well as regular tequila shots, Lily says she loves to down Jägerbombs, eat Domino's pizza, Greggs sausage rolls and cream cakes.
Lily lives in a care home in Bromsgrove in the UK and has three grown-up children, five grandchildren and four great-grandchildren.
Granddaughter Holly West said, "Her favourite pastime when she can is to watch her great-grandchildren play.
"At the age of 99, the home took nan ice skating for the first time in her life. She loved it.''
"She had a surprise party for her 100th birthday, where she did a tequila shot.
"Her philosophy is to live one day at a time."