Anna Nicole Smith's daughter Dannielynn attends Kentucky Derby gala with father

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Anna Nicole Smith's daughter, Dannielynn Birkhead, is looking very grown up.

The 12-year-old was all smiles as the stepped out with her father Larry Birkhead, 46, for the annual Barnstable Brown Kentucky Derby Eve Gala on Friday.

Dannielynn looked beautiful in a high-low, bright yellow dress with pink flower details and a bow around her waist as her dad matched her outfit with a pink tie and pocket square.

Larry Birkhead and Dannielynn Birkhead attend the Barnstable Brown Derby Eve Gala on May 3. (Stephen J. Cohen/WireImage)

The extravagant night took place at Patricia Barnstable Brown's Louisville home. The father-daughter duo has made a tradition of going to the Derby every year. They have attended since 2010, topping their outfits every year.

The father-daughter duo has made a tradition of going to the Derby every year since 2010. (Stephen J. Cohen/WireImage)

Birkhead took to social media to post about the special outing.

"Headed to the 31st annual Barnstable-Brown Derby Eve Gala with Dannielynn, in her awesome dress by Junona. The start to an awesome weekend! #proudpapa," he captioned the photo on Twitter.

Other guests included "That 70s Show" heartthrob Wilmer Valderrama, "Real Housewives of Dallas" star Cary Deuber, and "Bachelor" couple Kendall Long and Joe Amabile.

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Dannielynn had a turbulent early childhood. After her mother died in 2007 of a drug overdose at age 39, her father's identity was uncertain until Birkhead took a DNA test that confirmed paternity.

Model Anna Nicole Smith wears a long coat with pants as she walks down the runway at the Lane Bryant fashion show, February 5, 2001 in New York City. (Reuters)

Smith had claimed her boyfriend, Howard K. Stern, was Dannielynn's father.

Dannielynn was just a year old when her mother died, which came after the passing of her 20-year-old brother, Daniel Wayne Smith, the year prior.