The 23-year-old ARCA Series star announced her exciting off-track pursuit on Wednesday ... saying she is officially joining the undie company family.

Breidinger isn't just happy about the new gig, she says it's also a major accomplishment in getting over something she's struggled with since she was a child.

"Little me is crying," Breidinger said on Instagram. "Growing up I struggled a lot with body confidence. this past year I focused on my mental and physical health over appearance."

"I'm honored to be part of @victoriassecret family. Thank you for letting me feel confident in my own skin!🤍"