Mila Kunis flashes her engagement ring in Hollywood on March 8, 2014. Credit: X17online

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. 

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. 

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 Macaulay Culkin

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