They just grow up so fast, don't they?

Kim Kardashian West took to social media on Monday, Aug. 15, to share an adorable big-girl photo of her daughter North West.

The 3-year-old flashed a huge smile while wearing her mom's thigh-high metallic Balenciaga boots.

"Didn't think it would happen this soon...my baby girl stealing my shoes," the "Keeping Up with the Kardashians" star wrote on Instagram. "At least she has good taste #Balenciaga."

Didn't think it would happen this soon...my baby girl stealing my shoes. At least she has good taste #Balenciaga 😂😂😂

A photo posted by Kim Kardashian West (@kimkardashian) on

The same day, Kim played a little bit of dress up herself. The hot mom of two experimented with a long Rapunzel-style wig.

"Today," she simply captioned a pic on Instagram, sporting super-long locks for a photo shoot.

Today

A photo posted by Kim Kardashian West (@kimkardashian) on

On Snapchat, she shared a full-body image behind the scenes on set.

Kim's been looking better than ever, close to reaching her post-baby goal weight of 120 pounds after giving birth to son Saint West in December 2015. But, she got candid about her problem body parts during a live-stream on her subscription app later that afternoon.

The reality star admitted that she indeed does get injections in her famous backside, but not for what you may think. She goes in for cortisone shots to treat her psoriasis every few years.

The injections made an indent, which made some think her behind was surgically enhanced.

"There is a picture of me in Miami wearing an electric blue dress, and another picture of me walking down Robertson," she explained via the Daily Mail. "You see the indent. And I think that's when the rumors started, 'She's had [butt] implants.'"

Pichichi / Splash News / Splash News

She apparently isn't happy with her aging hands either, and revealed that she plans to do laser treatments on them at Dr. Simon Ourian's office.

Whatever she ends up doing, we think Kim is looking better than ever these days.