crème de la crème

Borrowed from French crème de la crème (literally “cream of the cream”).

• "To be an astronaut you must be the crème de la crème."
• "‘Plainly,’ said Miss Brodie, ‘you were not listening to me. If only you small girls would listen to me I would make of you the crème de la crème.’"
• "Whether you've been on the hunt for a pair of quality overalls or you just wanna cosplay as Mrs. Robert Rausch (the ‘Love Island’ girlies know), these ones from Dickies are the crème de la crème."
• "He studied engineering and architecture at the Politecnico di Torino and the fancy Ecole Nationale des Ponts et Chaussées—one of those Paris institutions for the crème de la crème de la crème^([sic])."

• best of the best
• cream of the crop
• pick of the crop