Shanna Moakler is one proud mama!

The former beauty queen posted a photo of daughter Atiana Cecilia De La Hoya headed to her junior prom — and the 17-year-old looked drop-dead gorgeous!

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Wearing a dark purple gown, the teen was all smiles next to her dapper date.

Atiana is the only child of Shanna and boxer Oscar De La Hoya, who dated from 1997 to 2000. The model also has two children, Landon, 12, and Alabama, 10, with ex-husband Travis Barker.

We wouldn't be surprised with Atiana followed in her famous mom's career footsteps!