Even celebrities like to face-off with their moms sometimes.

We've gone ahead and swapped the mugs of some of Hollywood's elite with their loving birth mothers.

Check out all the maternal mix-ups which prove ... sometimes the apple doesn't fall far from the tree.

Seriously ... that's a lotta weed.

Snoop Dogg's 4/20 party in Hollywood was shut down before the star of the show even arrived ... TMZ has learned.

"Snoop Lion 420 Festival" -- a giant party being held in a Hollywood Hills mansion to celebrate all things cannabis -- started at 11:00 AM ... but quickly crashed and burned thanks to a bunch of fuddy-duddy neighbors.

Law enforcement sources tell TMZ ... multiple neighbors in the surrounding area complained about the noise levels and parking situation caused by hoards of weed-loving partygoers. The fact that the party didn't have a permit didn't help matters either.

Cops arrived and quickly shut it down, putting a kibosh on the all-night festivities.

Our sources say no one was cited.

We're told Snoop arrived to the party just as it was being shut down. Our sources say Snoop spoke to police and was incredibly cooperative and understood why the party was being shut down.

Coolio should know better than to bring another woman home to the house he shares with his girlfriend ... and he should also know better than to allegedly punch her in the face.

TMZ has learned the rap legend -- aka Artis Ivey Jr. -- was popped on April Fools' Day after he allegedly pushed Anabella Chatman to the ground and punched her in the face.  And to add insult to injury ... according to the police report, Coolio then hightailed it out of there with their toddler son and the other woman.

Actually ... he didn't get out clean.  Anabella says Coolio struck her with his car as he beat his hasty retreat -- in fact, cops say she had tire marks on her leg.  Pretty compelling evidence.

Coolio tried convincing cops HE was the victim and that she scratched him in a jealous rage, but they weren't buyin' what he was sellin' ... so he was taken to the pokey.

Calls to Coolio were not returned.

Maria Shriver has no plans to take down those pesky Christmas lights ... even though it's ALREADY APRIL ... telling TMZ, they're way more than just Christmas lights.

TMZ broke the story ... Maria's neighbors have been complaining about the unseasonal decorations outside her Brentwood home, saying they're an eyesore. (TMZ shot video of the lights last week ... and they really do stick out like a sore thumb).

But Maria tells a slightly different story ... and says the lights represent something much deeper than a single holiday, which is why they're still up. 

Or maybe she's just making excuses.

Arnold Schwarzenegger and Maria Shriver reunited for an Easter brunch at a swanky hotel in Santa Monica yesterday ... but unlike Jesus, their marriage wasn't resurrected that day.

The former couple met up at Shutters On the Beach in their finest Easter outfits for what appeared to be a pretty civil get-together.

But sources close to the couple tell us ... despite the cordial front, Maria feels the relationship is irretrievably broken and the divorce is still full speed ahead.

You know ... because it's hard to take back your husband when he secretly knocks up your maid, hides the love child and then brags about his infidelities in a tell-all book.

Nothing gets celebrities into the Easter spirit ... like a good photo bomb.

Check out your favorite stars snapped giving each other an earful.

Brace yourself!

Britney Spears is spending Easter weekend in her hometown of Kentwood, LA ... hitting up a local Walmart for some flowers and other goodies.

Looks like she gave up washing her weave for Lent.

On the 94th day of Christmas ... MARIA SHRIVER STILL HASN'T TAKEN DOWN HER CHRISTMAS LIGHTS ... and her Brentwood neighbors are starting to go all Ebenezer Scrooge ... TMZ has learned.

Sources in Maria's super fancy Brentwood community tell TMZ, the neighbors have been clucking about Maria's ultra-bright Xmas light display for weeks now ... because Christmas is long over, and the lights on the trees around her property have become an eyesore.

In fact, TMZ shot video (below) on Maria's street Tuesday night ... and her house was the ONLY ONE still sportin' the Clark Griswold treatment.

We're told the neighbors haven't approached Maria directly yet because they like her and don't want to hurt her feelings ... but in typical passive aggressive neighborly fashion, they're hoping word will make its way back to her.

If not ... she can just keep the decorations up until December -- after all, it's only another 271 days until Santa comes back to town.

The tribe has spoken -- and the adorable Party Pooch was the blarney best in our annual St. Paddy's Photo Contest -- scoring the $250 pot-o-gold and some great gifts from TMZ!

**CLICK HERE for contest rules and regulations!**