Time to give a shoutout to all the moms out there!

In honor of Mother's Day, stars have taken to their Facebook, Twitter and Instagram accounts to share personal photos of their moms -- or, in some cases, their own children.

Think you know who the two kids above are? Take a guess.

That's Lauren Conrad on the left and Alicia Keys on the right, both of whom posted sentimental stories about their mamas on Facebook pages today. Click their names to see their messages.

Other stars sharing pics include Molly Sims and Malin Akerman and Holly Madison, who both celebrate for the first time as moms this year. 

Check out all the photos above!

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