sunglasses spandex gym sweat Rosie Huntington-Whiteley abs body hat

Rosie Huntington-Whiteley hit the gym in the valley on Wednesday, and the Victoria's Secret hottie flashed us a peek at her tight and toned tummy in a sports bra and spandex.

And when she's not slaving away to keep her model bod looking picture perfect in lingerie, she's promoting her own undergarments! Her line of intimates with Marks & Spencer has been out for a year, so naturally she's created an anniversary collection with the U.K. retailer!

“I can’t quite believe it’s been a whole year since the Rosie for Autograph launch, it’s gone so fast!” Rosie told Vogue U.K.. "For my one year anniversary collection, I’m loving the new shapes and, as well as including my signature soft colors, I’ve experimented with a darker, richer palette perfect for the autumn season."

Since its launch, the range has become the fastest selling underwear in the store's history ... looks like Ms. H-W is well on her way to building a fashion empire!