Nicole Richie and her daughter Kate Madden made a rare mother-daughter appearance at the “Stop! That! Train!” premiere in Los Angeles Monday.

The pair was pictured posing on the red carpet, with the reality TV personality wearing a navy blue and polka dot dress with a matching head scarf, and accessorizing with pendant earrings and what appeared to be a fur stole.

Kate, 18, meanwhile, opted for an edgy strapless black dress with matching knee-high boots.

She wore her long dark hair parted down the middle and accessorized her outfit with layered bracelets and necklaces.

Kate — whom the “Simple Life” alum, 44, shares with husband Joel Madden, 47, along with son Sparrow, 16 — was spotted hanging out with friends at Coachella last month, looking equally as fashionable.

That’s hardly a surprise, given that mom Nicole heads up House of Harlow, a design house named after her daughter, whose full given name is Harlow Kate.

“She goes by her middle name. She has her whole life,” Nicole revealed in January, after her birthday post tribute for her daughter sparked confusion among fans, noting that while she “didn’t look” at the comments, it “makes sense” that they would be confused.

“How to make a grown man cry!!! 😭😭😭😭😭😭😭❤️❤️❤️❤️❤️,” Joel commented on the snapshot carousel at the time, adding, “Love you Kate! You’re a bad ass [sic]! Never forget it! Happy 18!! 🎉🎉❤️❤️🎉.”

“Happy Birthday!? Did she change her name?” one person questioned, with others echoing the confusion.

In October 2025, Nicole shared that the pair like to trade clothing from each others’ closets. “We’re pretty open with each other and we let each other borrow whatever [clothes] we want,” she divulged to Extra at the time, noting that her daughter “keeps things in really good condition.”

She added, “My mom always let me borrow and take anything I wanted. And so that’s just the attitude that we have in our house.”

The mother-daughter bond appears to have remained strong throughout the years. In February, Kate took to social media with a pic of her angel wing back tattoos — a tribute to her mother’s famed angel wing tattoos.

Kate wore a gold dress in the pair of photos, captioned the upload simply  “🪽” in honor of her mother.