Jessica Simpson's daughter Maxwell is a little 'Cowgirl' in pic

Just when you think Jessica Simpson's 4-year-old daughter Maxwell couldn't be anymore adorable, she goes horseback riding.

The doting mother shared a photo on Tuesday of Maxwell dressed like a little equestrian as she rode around on a horse. Simpson captioned the cute moment with a quote from her daughter. "I'm a Cowgirl Mommy!!!' - #MAXIDREW," she wrote.

WATCH: Jessica Simpson's Daughter Maxwell Has Officially Become Her Doppelganger

"I'm a Cowgirl Mommy!!!" - #MAXIDREW

A photo posted by Jessica Simpson (@jessicasimpson) on Dec 6, 2016 at 8:26pm PST

Simpson's look-alike daughter is frequently featured on her mother's Instagram, along with her 3-year-old brother, Ace. Just last month, the 36-year-old singer shared a behind-the-scenes photo of her kids posing for their school photo, which looked more like a professional modeling shoot. "Seriously?!?!? Thank you God for these precious kiddos," she captioned the image.

Behind the scenes of school pictures...seriously?!?!?Thank you God for these precious kiddos. #maxidrew #aceknute

A photo posted by Jessica Simpson (@jessicasimpson) on Nov 19, 2016 at 1:57pm PST

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While Simpson clearly loves motherhood, she told ET that she and husband Eric Johnson have no plans to expand their brood. "I don't think I could have another baby right now," she said. "It was a very, very big shock after having a baby and four months later knowing I was pregnant again, so I think that's not in our near future."

Simpson added, "But people have kids at 40 now, so you never know."

WATCH: Jessica Simpson's Daughter Accidentally Cuts Her Own Hair -- 'Mommy Is Not Happy'

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