with your nose in the air
From Longman Dictionary of Contemporary Englishwith your nose in the airwith your nose in the airPROUDbehaving as if you are more important than other people and not talking to them She just walked past with her nose in the air. → noseExamples from the Corpuswith your nose in the air• She just walked past with her nose in the air.• Standing with their noses in the air.