The dad of five took to Instagram to post a couple of snaps of Tilly, who turns 18 today (08.11.19), and wrote in the caption: "18yrs ago today this gorgeous lady was born.
"@tillyramsay you are gracious incredibly unselfish and always thinking of others before yourself."
Gordon, who turned 53 today, continued: "I'm so proud and happy to share our birthdays together, you are my best ever birthday present, love you Kiddo. Dad X."
The star's celeb pals rushed to the comments to wish the pair a happy birthday.
I'm so proud and happy to share our birthdays together.
Former footballer David Beckham wrote, "Happy birthday @tillyramsay and @gordongram" alongside two heart emojis.
Celebrity Juice host Keith Lemon joked: "Appy birfday."
Modern Family actor Eric Stonestreet wrote: "Happy bday Tilly!"
One of the photos shows Tilly and Gordon standing together, while the other is a closer portrait of the teenager smiling and looking off camera.
Tilly's name cropped up earlier this week on This Morning, when TV chef Gino D'Acampo appeared to confirm that she is dating his son, 17-year-old Luciano.
Speaking on the show, Gino joked that he gets "pleasure" from the fact their relationship "annoys" the Hell's Kitchen star.
"But what a great pleasure I have knowing that my son is dating Gordon’s daughter. Just to really annoy him. That will do it!"
Gordon had previously spoken about the teenagers' relationship and said it was a "nightmare".
During an appearance on The Jonathan Ross Show in October, the host said as a pic of Luciano and Gino flashed up on the screen: "He's a very handsome young man. I think maybe Gino isn't the father!"
Jonathan continued: "He's a good looking man. Luciano, I believe. And he is dating your daughter?"
Gordon said: "Matilda..."
"So Matilda and Lucian, the young Ramsay and the young D'Acampo are an item?" Jonathan pressed.
The chef replied, with a grin: "Nightmare!"
Gordon and his wife Tana have five children - Megan, 21, twins Holly and Jack, 19, Tilly, 18 and baby Oscar, who was born in April.
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