Simpson, 36, said her little girl has has her own innate sense of style, reported People magazine.
"She teaches me a lot about outfits, and she is better at putting outfits together than me. She's a new inspiration," Simpson said.
The "Employee of the Month" actress said she has a warehouse full of clothes she is saving for her daughter to wear one day, even though they may not fit her.
"Maxwell is probably going to be taller than me in a year. She's only 4 and she's gonna be taller than me.