grow up into
grow up into (something)
To become a particular type of person as one ages and matures. Wow, Julie has really grown up into a very poised young woman. I can't believe she's already 16!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
grow up into someone or something
to mature into a type of person or a person who does a particular job. She grew up into a fine young lady. I want to grow up into a strong and healthy person.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.