Jessica Simpson was feeling wistful as daughter Maxwell graduated preschool this week.

The 36-year-old designer bemoaned how quickly Maxwell is growing up as she shared photos Wednesday on Twitter from the 5-year-old's preschool graduation ceremony.

"Spread your wings and prepare to fly for you have become a butterfly #kindergartenherewecome," Simpson captioned a picture of her daughter, adding a crying emoji.

"Someone is excited for kindergarten! How do all you moms do it? I need help," she confessed in another post.

Simpson shares Maxwell and 3-year-old son Ace with husband Eric Johnson, whom she married in 2014.

She posted a new family photo in May while celebrating her seventh anniversary as a couple with Johnson.

"7 years, 2 kids, and a whole lotta love later #may21 #MAXIDREW #ACEKNUTE," the star wrote at the time.

Simpson denied in an interview with "The Ellen DeGeneres Show" the same month that she and Johnson are expecting their third child.

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"I'm not pregnant on your show," she told host Ellen DeGeneres. "We got an IUD. Nothing's going to get in that uterus."

"I have two beautiful children and I'm not having a third. They're too cute. You really can't top that," the designer explained.