Katy Perry has been dethroned as #1 on Maxim's Hot 100 list -- and Victoria's Secret model Rosie Huntington-Whiteley has been crowned the new queen!

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The 24-year-old model-turned-actress takes Megan Fox's place as the the lead female in the new "Transformers" movie (watch the trailer here) -- and, according to Maxim, she's "even foxier" than Megan.

This is Rosie's debut on the Hot 100 list -- where she's joined by stars like Olivia Wilde, Leighton Meester, Mila Kunis and more!

See the Top 20 above. Check out the rest of the list over at Maxim.