He got a bit too big for his boots after that promotion
Don't let this success make you too big for your boots
She's been acting a little too big for her boots since she won the award
He thinks he's the boss now, but he's just getting too big for his boots
The coach warned him not to get too big for his boots
Ever since he started that new project, he's been too big for his boots
She's always been a bit too big for her boots when things go well
He needs to be taken down a peg; he's getting too big for his boots
I don't want you to get too big for your boots just because you're popular
He's definitely too big for his boots if he thinks he can boss everyone around
That new promotion is making you think you're too big for your boots.
I'm just confident in my new responsibilities.
Well, try to stay grounded, okay?
He's become too big for his boots since that promotion
He's become arrogant and conceited after his promotion
His ego has grown significantly; he's quite full of himself now