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Kate Hudson, Glamour Magazine Cover

Patrick Demarchelier/Glamour Magazine

Kate Hudson's got it and isn't afraid to flaunt it!

The 33-year-old mom of two posed topless for Glamour's April issue. In the sexy shot, Matthew Bellamy's fiancée shows off her svelte figure, which she credits in part to baby Bingham.

When asked how she stays in shape, Hudson explained, "Dancing, Pilates, and running after Bing."

According to Kate, her 18-month-old son is "sprinting!" He's also "been singing too" and "loves music."

The blond beauty also took a chance to gush about her and ex-husband Chris Robinson's 9-year-old son Ryder, calling him "the coolest cat—an amazing big brother, so patient and tolerant. Bing pulls his hair, and Ryder just laughs. He's such a good person."

She also added, "I couldn't be a prouder mommy." And we don't blame her.