@annev / Twitter 1 / 12
@annev / Twitter 1 / 12

A mini-model! Anne V is about to catwalk her way through motherhood.

The Sports Illustrated model, born Anne Vyalitsyna, announced her pregnancy on Twitter on March 19 by posting an image of her sonogram.

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"I couldn't feel luckier, happier and more grateful," she tweeted. "I couldn't be more excited for your arrival little feet! #mamatobe."

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The baby will be the first child for both her and boyfriend Adam Cahan, a Yahoo executive. The model previously dated Adam Levine, New York Mets pitcher Matt Harvey and DJ Calvin Harris.

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Anne later showed off her baby bump in a snap with friend and legendary model Christy Turlington. She tweeted, "So proud to be a part of @everymomcounts! Thank you @cturlington for your love and birthday wishes and for being the best role model ever!!!"

The day of Anne's big announcement was also a big day for her, too, since it was her birthday.

Best. Birthday. Present. Ever.