Brain Game: You'll Be a Woman Soon
By BY

By changing one letter at a time to form different English words, and leaving all other letters in their original positions, convert GIRL into LADY in seven (or fewer) steps. Good luck!
G I R L _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ L A D Y
Here is a seven-step SOLUTION.
A SEVEN-STEP SOLUTION:
GIRL > GILL > BILL > BALL > BALE > BADE > LADE > LADY
Did you come up with a different series of words? Feel free to post your solution in the comments. Thanks!