hats off to (someone or something)
A phrase used to express congratulations to someone or something. (The removal of one's hat is typically a gesture of respect.) Hats off to you for getting the big promotion!
hats off to someone or something
Fig. let us salute or honor someone or something. Hat's off to Perry for planning the dinner and finding such a good band.
hats off to
Congratulations to, as in Hats off to Claire! She's set a new record for the mile. This expression alludes to taking off one's hat as a sign of respect. [Mid-1800s]