With your nose in the air
Definition 1 of 1
Pro Tip 1/3Cultural Perception
May suggest the person is unapproachable or disconnected from reality, often viewed negatively. 
After winning the award, he walked with his nose in the air, ignoring old friends.
Pro Tip 2/3Non-literal Imagery
This phrase uses a physical action to describe an attitude, but doesn't mean someone's nose is literally in the air. 
She carries herself with her nose in the air, as if she's better than everyone.
Pro Tip 3/3Negative Emotion
Using this phrase can express disapproval of someone's behavior or attitude. 
Their nose in the air attitude at the reunion made them seem aloof.