Now you see her, now you don't!

Nicole Richie and Joel Madden went to dinner at Nobu in Malibu last night, and even though the reformed party girl flashed us a quick smile (and a peek at her bra!) on the way out, she ducked for cover as Joel drove her and a few friends home.

In other news, it's being reported that Nicole and Joel are trying for their third child together, and In Touch claims that she's even "gained a few pounds in the hope she will be expecting soon." Hmm, she doesn't look any bigger than usual these pics...

The mag also reports that Nicole wanted to wait and see if Fashion Star took off, but "that didn't happen ... so now she is back on board with the family plan." The source added, "She told me that she got pregnant easily the first two times, so it shouldn't be that hard. But they are definitely trying."

Alec Baldwin said "I do" over the weekend to yoga instructor Hilaria Thomas, and now he's saying adieu to the Twitter world!

The newlywed 30 Rock actor showed off a picture of his wedding band on the microblogging site over the weekend, but promptly shut down his account on Monday morning, writing cryptically, "It's been fun."

No official reason has been revealed for his departure from the social media site, although this isn't the first time the hot tempered 54-year-old has abruptly quit Twitter. In December, following an in-flight incident where he was kicked off an American Airlines flight for refusing to turn off his phone while playing "Words With Friends", Baldwin declared he was done tweeting, only to reactivate his account a short time later.

We guess now that he's a married man he's making some changes!

Selena Gomez may have been celebrating Ashley Tisdale's 27th birthday in Malibu, but the songstress couldn't help but clown around with a pal in the sand.

Even though we have a feeling the two are just friends, seems like that boy is getting a little frisky with Justin Bieber's ladylove. Watch out!

Selena's beach style is adorable ... cropped lime green tank with a peace symbol, tiny white denim shorts and a long, fuzzy sweater. Easy and breezy, indeed.

See more of her kickin' it in the sand in our gallery below.

AV nightclub was the place to be last night, with everyone from Chris Brown to Lindsay Lohan coming out to do a little pre-fourth of July partying!

The R&B star, fresh off his performance at the BET awards on Sunday, arrived with his girlfriend Karrueche Tran and flashed us a smile, revealing an elaborate gold grill across all his front teeth. From the tattoos to the chompers, it seems Rihanna's ex is biting his style from fellow rap star Lil' Wayne!

Also in attendance was birthday girl Lindsay Lohan, who was there for the Liz & Dick wrap party. The 26-year-old actress looked like she came straight from the set, sporting a Liz Taylor signature dark brunette bouffant 'do. As usual, the Mean Girls star caused pandemonium outside the club, with photographers fighting to get a shot of her.

Not to bring up the past, but remember when Lilo reached out to Breezy via Twitter last year and asked, "@chrisbrown wanna meet?" but go zero response?

Hopefully Hollywood's resident bad boy didn't give her the brush off last night too!

Tom Cruise fans won't have to worry about his upcoming movie Jack Reacher being affected by his impending divorce from Katie Holmes. Paramount studios says the movie will be released as planned on December 21.

Paramount released the following statement:

"Tom is a huge movie star for the right reason, he’s a very talented actor whose movies have entertained millions of fans. His ability to make a great movie, as we saw with the most recent installment in the "Mission: Impossible" franchise -- the most successful of the series to date -- is the thing that moviegoers remember above all else."

The flick, according to IMDB, is about a homicide investigator who digs deeper into a case involving a trained military sniper who shot five random victims. Jack Reacher is ased on a book in Lee Child's crime series.

Cruise is reportedly wrapped with the film Oblivion which was filming in Iceland. The megastar is currently on his way back to the U.S. to celebrate his 50th birthday ... which is today.

Click thru to see the newly-released trailer for the film.

Ashley Tisdale just keeps getting hotter with age!

The High School Musical star donned a sexy yellow fringe bikini and cut-off shorts that showed off her flawless figure as she celebrated her 27th birthday with an intimate beach bash in Malibu, on Monday afternoon.

Tisdale partied with her galpals before taking off with boyfriend Scott Speer for a little bday make out sesh on the sand -- they make such a cute couple!

The former Disney star is currently gearing up to play a high-priced escort who gets mixed up in the word of motorcycle gangs in a three-episode guest appearance for the sixth season of Sons of Anarchy.

Happy birthday Ash!

It seems like just yesterday this "little peanut" was born, and now he's already walking!

Rachel Zoe and her husband Rodger Berman took their baby son Skyler for a playdate at a Malibu park over the weekend, and the little boy showed off his moves while his proud parents looked on. The celebrity stylist looked beach chic in a black maxi dress, green military blazer, and round sunnies, while her investment banker beau kept it casual in jeans and a flannel.

Skyler was definitely the best dressed for the occasion, and for good reason! The Rachel Zoe Project star recently revealed her mini-me was also her favorite client, since he has "no opinion" on the outfits she chooses for him, unlike some of her other diva clientele.

The happy family will soon be migrating East to spend the summer in the Hamptons, and we can only imagine the preppy outfits being put together to rock in the posh beach town!

It's been a rough year for Real Housewives of Beverly Hills star Taylor Armstrong, but the doting mom was all smiles as she spent quality time with daughter Kennedy and a few friends at the Malibu Country Mart playground, on Monday afternoon.

Armstrong channeled her inner Indian princess in a pretty white blouse, leather shorts and matching moccasins as she played in the sand box with her darling 6-year-old daughter, before enjoying a glass of wine at a nearby restaurant.

It was recently reported that the 41-year-old reality star could be axed from the Housewives show that made her famous, after producers tired of her wildly erratic behavior during filming. Isn't that what makes reality TV so successful in the first place?