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She sure knows how to suck!

Over the weekend, Heidi Klum posted a rather suggestive pic of her sucking on a popsicle -- further proving she still knows how to make men's tongues wag.

The snap, which she captioned, "Yummy," shows the mom-of-four indulging in a sweet rainbow treat. Even supermodels deserve a guilty pleasure every once in a while -- even a phallic-looking one!

The 41-year-old Project Runway host posed in a rolled-down pink maxi-dress, revealing her bright orange triangle bikini top and her flat stomach.

After spending Sunday morning by the pool, Heidi celebrated daughter Leni's 10th birthday.

The proud mama celebrated the big 1-0 by throwing a party, complete with gold balloons, festive decorations and presents piled high. The America's Got Talent judge shared a bevy of photos via Instagram of her fun-filled day.

Looks like Heidi's enjoying the single life!