Selma Blair and her baby daddy Jason Bleick have called it quits, according to Us.

The Anger Management starlet, 40, began dating her fashion designer boyfriend back in 2010 while she was collaborating on his EVER fashion line.

Blair gave birth to their son, Arthur, in July 2011. The mother of one was previously married to Ahmet Zappa from 2004 - 2006.

We've reached out to Blair's rep for comment, but have yet to hear back.

We can't believe Selma Blair is 40!

The Cruel Intentions star looked youthful as ever in bright red pants, a flowered peasant top and flats, as she did lunch at trendy King's Road Cafe in LA with a cute male friend, on Tuesday afternoon.

Blair has been taking a backseat to acting since the birth of her son Arthur, who celebrated his first birthday this week, and the doting mom shared a darling Twitpic of the little guy with his very bday first cake!

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Adorbs!

Selma Blair, beau Jason Bleick and their adorable son Arthur went to lunch in Studio City yesterday, and while Jason wore his usual head-to-toe black, Selma and her baby boy coordinated in matching striped tops and white shorts. So cute!

Selma shared pictures of Arthur's first birthday party the other day, and the tiny tot got not one but two different cakes! Selma tweeted, "Happy birthday my saint. Birthday weekend. Xx." The first featured figurines of Winnie The Pooh, a duck and a dog, and the second had a large Elmo decoration:

What a law abiding citizen!

Selma Blair hit up a West Hollywood nail salon for a little pampering Wednesday, but not before she fed her parking meter! The brunette beauty must know that parking enforcement doesn't mess around when it comes to dishing out the fines!

The Cruel Intentions star showed off her best summer style with a breezy black and white dress complete with a matching straw fedora. We wonder if she matched her manicure color to her outfit?

Lookin' good, Miss Blair!

Selma Blair loves her precious little boy Arthur! With an adorable face like that, we don't blame her.

The 39-year-old Anger Management star took her son shopping in Beverly Hills. Looks like mama is a fan of Ralph Lauren. Tres chic!

Blair, who gave birth to Arthur last July, will be celebrating her first Mother's Day this weekend.

Selma Blair is lovin' life as a mom, and we can see why!

The Cruel Intentions actress took her adorable son Arthur for an afternoon stroll. Look at that cute face!

Blair, who says she is still breastfeeding her baby, will soon be starring opposite Charlie Sheen in Anger Management.

Enjoy the free time while you have it, Selma!

Yikes!

Looking extremely tired and in need of a nap, new mom Selma Blair emerged from a nail salon on Wednesday afternoon sporting a puffy face and a very nasty black eye that she desperately tried to conceal with her hair.

The Legally Blonde star has no doubt been losing sleep since nine-month-old son Arthur arrived, and she's also preparing to make her TV comeback as Charlie Sheen's "best friend with benefits" in an upcoming series. The show is set to begin filming later this month, and will premiere in June.

Get some rest, Selma!

Selma Blair stepped out to grab lunch at Cheebo in Hollywood, and we're totally digging her bright blue pants! Although most new moms would shy away from attention-grabbing hues, the 39-year-old actress had no problem focusing the spotlight on her amazing post-baby bod!

After welcoming son Arthur in July, the hot mama wasted no time getting back into shape...and it shows! Giving Victoria Beckham a run for her money, the Cruel Intentions star shed her baby weight at lightning speed, and now we know why...she's starring in a new show with Charlie Sheen!

Is that a script we see in her hand? We haven't seen Selma on the big screen in a while, but it seems the actress is packing her schedule with work. In addition to TV, she is set to star in Four Saints, a British war drama currently in pre-production.