Neil Patrick Harris' seven-year-old daughter Harper started losing her teeth in October last year - and to tell you the tooth, she's loving it!
Harper lost another tooth the other day and wrote an ADORABLE letter in her brightest crayons that reads, "Dear Tooth Fairy, I lost my tooth today! I love you because you rock!"
And the drawing she made is beau-teeth-ful!
The proud papa shared a picture of the letter with his 6.5M Insta followers, simply captioned, "Harper lost another tooth. Wrote this letter. Sigh. I just love being a father."
We can't wipe the smiles off our faces!
The Doogie Howser, M.D. star and his actor hubby David Burtka have two children together: twins Harper and Gideon, born via surrogate in October 2010.
The couple actually appeared on the hit sitcom How I Met Your Mother together, with David occasionally guest starring as 'Scooter', an ex-boyfriend of one of the female characters. Neil, of course, rose to fame as playboy Barney Stinson.
They married in Italy in September 2014, with their little tots participating in the ceremony.
The family of four is absolutely darling - and Insta users agree!
The 44-year-old's Instagram fans LOVED Harper's letter.
"You're saving the letters forever, yes? Harper will get a big kick out of seeing them in the future!" said one person.
Another commented, "This is so wonderfully joyous. Can’t we all just stay children forever?!"
Have your kids ever written cute letters to the tooth fairy, mums? Let us know!