Grey’s Anatomy star Justin Chambers had an extremely busy Sunday with his wife, Keisha, and their five children, Isabella, twins Maya and Kaila, Eva, and Jackson.

All seven of them attended a morning church service before walking past a cat and dog rescue stand in the afternoon. One of Chambers’ little girls fell in love with one of the dogs and soon Keisha was filling out adoption papers and taking the new family pet home!

Look at the cute children fighting over who gets to walk the dog! Adorable!

More photos (20+) of the big, happy family after the jump!

Ahem. Ya think their stylists coordinated their outfits?

Most of the Grey’s Anatomy stars made it out for the ABC Upfronts at NYC’s Lincoln Center on Tuesday — Ellen Pompeo, Sandra Oh, Kate Walsh, Sara Ramirez, Eric Dane (with wife Rebecca Gayheart and Justin Chambers (with wife Keisha).

Kate, who’s getting her own Grey’s spin-off series called Private Practice, announced her engagement to Fox Studios exec Alex Young at the Upfronts.

Other pictures include the Grey’s cast at the Entertainment Weekly party at NYC’s The Box later in the evening.

Noticeably missing from the soirée were all parties involved in the Grey’s war: Isaiah Washington, Patrick Dempsey, T.R. Knight and Katherine Heigl.

Who rocked the ABC Upfronts best — ELLEN, SANDRA, KATE or SARA?

It looks like those long hours on the set of Grey’s Anatomy and being a father of five is finally catching up with model-turned-actor Justin Chambers, aka Dr. Alex Karev.

But dark circles, bags under the eyes, a pimple the size of Mars, or even syphilis… Justin still makes for one hot doc!

20+ pictures inside of Justin Chambers, 36, at the grand opening of the Triumph NYC store on Thursday night…

Justin Chambers, aka Dr. Alex Karev, tops TV’s 40 hottest stars who steam up the screen in TV Guide’s “Sexy Issue.”

Co-star Kate Walsh (Dr. Addison Montgomery) weighed in on the 36-year-old and how the set on Grey’s Anatomy is like a petting zoo:

Justin’s character , Alex, is sort of the dark horse — mysterious, good-looking and brutally honest. You get the feeling that he’s got a secret, and I think that’s very sexy. In real life, Justin has a beautiful wife and five gorgeous kids. He’s really funny and genuinely cares about his fellow cast mates. Sometimes he’ll do a little growl or bark before we roll on a scene to loosen up, which I appreciate, since I’ll sometimes vocally warm up with a meow or a bark. It’s like a petting zoo in there! Justin’s also got this hip, rock and roll style that is all his own. He has fantastic taste in music, cars and clothes. He’s super humble and is always the first one to hand out a compliment. When we were over in Italy doing press, women went crazy for him. He was like a Beatle. They just screamed and cried.

For a bigger picture of Justin Chambers, CLICK HERE!

Grey’s Anatomy star Justin Chambers was accompanied to the NAACP Awards by wife Keisha Chambers . Grey’s Anatomy co-stars Chandra Wilson and Isaiah Washington picked up best supporting actor awards in a drama series.

Scalpel sharp Justin Chambers plays smart-ass surgical intern Dr. Alex Karev on ABC’s hit drama Grey’s Anatomy. But in the March 2007 issue of Men’s Health, TV doc Justin swaps his scrubs for strong suits. Check out Justin Chambers‘ Men’s Health photo shoot below!

Justin, 36, also made an appearance on Jimmy Kimmel Live! this past Thursday. He chats up his kids a lot and their rock ‘n’ roll band called “NYLA”. (Um, wasn’t that Britney’s failed NYC restaurant?) What I would love to see is his entire family (wife + 5 kids) in a photo shoot together. Yes yes?