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Selma Blair, Arthur, Twitter

Twitter

It was a big day for first-time mom Selma Blair.

Her little (Arthur) Saint celebrated his first birthday last weekend with not one, but two yummy-looking cakes.

Baby Arthur's official birthday is July 25, but the Anger Management starlet couldn't wait to celebrate. She tweeted a picture of the first cake, a robin's egg-blue creation complete with dog, duck and Winnie-the-Pooh figures, Saturday.

Then the proud mama followed the tweet with a picture of the second, Elmo-inspired cake and her baby boy, adding, "Happy birthday my saint. Birthday weekend. Xx."

Arthur is her first child with fashion designer boyfriend Jason Bleick.

So is baby No. 2 on the way?!

Selma recently dispelled pregnancy rumors in mid-June after she was photographed wearing a loose-fitting, striped top.

In response to speculation, she tweeted, "No baby on board, just a big tummy. Ha."

The 39-year-old mother has called her still-sticking-around baby weight "a mess of Jell-O all over my body."

We surely don't see the extra cushion for the pushin' she's talking about. She looks freakin' fabulous!