Ashlee Simpson’s daughter Jagger, 8, is copying her 2004 style after discovering ‘Autobiography’ album

Ashlee Simpson’s daughter is in “L.O.V.E.” with her mom’s throwback style.

After Jagger “discovered” Simpson’s “Autobiography” album, the 8-year-old copied her mom’s 2004 fashion, the “Pieces of Me” singer exclusively told Page Six while promoting her partnership with Dairy Queen.

“She definitely put on that day some, like, black pants and was looking for two belts,” Simpson, 39, said ahead of the record’s 20th anniversary.

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The “7th Heaven” alum noted that Jagger and her “little friends” have “fun” belting out her songs — and are “new fans” of Avril Lavigne’s music as well.

Simpson, who is also the mother of son Bronx, 15, and son Ziggy, 3, went on to share her own style regrets from that era.

Acknowledging that she was once “feeling herself” in “wrestling boots” and “tutu skirts” back in the day, the actress said she would now skip that combo.

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“Super low jeans I would [also] pass on,” Simpson said before joking that she “really held on to a mullet for a long time.”

She reflected on “coloring [her] hair all the time” back in the day, gushing about how much she “loved being a redhead.”

The former reality star explained, “It fades nice. It kind of works with my base color, which is, like, an ashy honey color. So it’s just has really worked for me.”

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In the two decades since “Autobiography” came out in 2004, Simpson has released “I Am Me” and “Bittersweet World” in 2005 and 2008, respectively.

Simpson went on to tease her next album, telling us that she has been “working on” the fun project and considers it her “baby.”

She noted that it will arrive before another actual baby because she considers that chapter of her life “very closed.”

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To celebrate her musical debut, Simpson has teamed up with Dairy Queen since the brand’s Brownie Batter Blizzard Treat is also celebrating its 20th anniversary — by coming out of the DQ Freezer to return to the menu.

Simpson, notably, used to eat the sweet treat while touring “Autobiography.”

The performer recalled, “It’s like eating brownie dough. It’s so good. … I would make the stops and go get this. So this is, like, the perfect match.”