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The stars spent some time with their mamas yesterday as celebs celebrated Mother's Day all over Los Angeles and New York City.

So, who did what?

Well, there were definitely a lot of brunches!

The Kardashian clan celebrated in Santa Monica, as they honored both Kris Jenner and Kourtney Kardashian (wearing a Diana dress by RAOUL) with a meal at Ivy by the Shore. Joining them were Kourtney's adorable son mason, Khloe, her hubby Lamar Odom, Bruce Jenner and daughters Kendall and Kylie.

Also in L.A.: Gwen Stefani stepped out with Gavin Rossdale and their kids Zuma and Kingston, Jen Garner and Ben Affleck were seen with daughters Seraphina and Violet in Redondo Beach and Felicity Huffman went to the movies with William H. Macy and their children.

Across the country in NYC, Rihanna took her mom Monica to Da Silvano, Bethenny Frankel was seen walking around town with daughter Bryn and husband Jason and Martha Stewart grabbed lunch at Il Cantinori Restaurant with daughter Alexis and granddaughter Jude.

Check out those sightings and more in the gallery above!