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Nice work, Kelso! After Us Weekly confirmed Ashton Kutcher and Mila Kunis' engagement in late February, the "Family Guy actress, 30, stepped out on Saturday, March 8 in Hollywood, flashing her ginormous engagement ring from her former That '70s Show costar.

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The brunette stunner was sporting a vibrant blueberry-colored minidress with grey cardigan and flats. But her massive rock was the main focus as it sparkled on the star's finger. To see the photo, click here.

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The couple has been dating since the spring of 2011 after Kutcher, 36, split from ex-wife Demi Moore and Kunis ended her eight-year relationship with former child star Macauley Culkin.

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"She is crazy about him," a source tells Us of the Ukrainian-born actress. "It won't be a long engagement."


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