Twins Mary-Kate and Ashley Olsen haven't been together on TV in years, but they're taking to YouTube in joint ads for their new website, StyleMint.

The 25-year-old sisters are running a competition to win T-shirts on the site, which advertises that customers can "get styled with exclusively designed T-shirts by Mary-Kate Olsen and Ashley Olsen."

Mary-Kate and Ash are taking this site seriously -- even if it is just T-shirts! "It took us a year-and-a-half to make the first T-shirt," Mary-Kate said.

A newly pregnant Hilary Duff and hubby Mike Comrie enjoyed a shopping day together in Malibu. Already buying maternity clothes, Hil?

The 23-year-old actress is spending every last bit of alone time with her sexy man before they become a family of three.

While wearing snug jeans and a long sleeve striped shirt, Hil sported the very beginnings of her baby bump. Hopefully by now, all of that morning sickness is behind her!

We know how much Hil loves her pricey bags. No doubt, she'll be rockin' the most expensive diaper bag in about seven months. Only the best for this momma-to-be!

See more of Hilary sporting her tiny bump ... after the jump.

Halle Berry celebrated the big 4-5 over the weekend in Malibu showing off her incredibly sculpted bod! The Oscar-winning actress has never looked better.

Berry, along with beau Oliver Martinez, Nahla and friends, hit the beach for some fun in the sand. There's no doubt that Halle is totally in love with her 3-year-old daughter. Adorable!

Earlier in the weekend, the actress introduced Nahla to Olivier's family while they all grabbed lunch in West Hollywood. Sounds like Halle and her sexy man are taking their one year relationship to the next level!

Olivier and Halle - what a gorgeous pair! See more of Halle on the beach ... after the jump.

Miley Cyrus donned an ultra-short sixties inspired dress that showed off her perfectly toned legs as she made her way to a private swag bag party at a house in Brentwood Sunday.

Celebs like Cher, Zoe Saldana, Kristen Bell and Hailee Steinfeld also attended the exclusive soiree which featured goodies from tons of brands including Spanx, Nike and Henri Bendel.

Miley looked like she was having a great time outside the party, but earlier that day she actually posted a cryptic message on Twitter suggesting there's trouble amongst her close group of friends. "Funny how things change. I only want consistent friends NOT convenient friends," the former Hannah Montana star wrote.

After that whole "Salvia bong" video incident, we can seen why the pop superstar is even that much more weary about who she lets into her entourage.

Baby Bing is headed to London! Proud papa Tweeted the first shot of his adorable son Bingham yesterday and captioned it "Family life."

Later, Kate Hudson carried her precious little cargo through LAX with aid from two bodyguards on Sunday, while fiancé Matthew Bellamy was stuck carrying all the bags.

The Muse frontman grew up in the UK, and was raised by his grandparents in Devon after his own parents divorced when he was young. The pair plan to split their time between London, where they recently purchased a $8 million pad, and Kate's home base in LA.

But don't expect the happy pair to be tying the knot any time soon! The Something Borrowed actress confessed to Elle magazine a month before her son was born: “One thing at a time. We’ll say hello to our new one and enjoy that for a while.”

Gwen Stefani and her nanny took adorable little Zuma (with drumsticks in hand!) for a walk in LA, on Sunday. Is the youngest Stefani-Rossdale following in his parents' footsteps and practicing for a music career so soon?

The rambunctious two-year-old is getting ready to celebrate his third birthday on August 21, so maybe he'll finally get to rock his own colorful mohawk like his big bro, Kingston.

There has been a lot of drama recently surrounding Stefani's LAMB fashion line, and the fact that she will not be attending New York Fashion Week this year for her own label's fall fashion preview -- a big no-no in the fashion world.

Find out why the busy mamma is skipping out on her own fashion show in NYC next month, after the jump ...

Jessica Alba has given birth to a baby girl!

Jess, 30, and hubby Cash Warren welcomed baby Haven Garner Warren on Saturday, Alba wrote on her Facebook page late Sunday afternoon.

"She was born on Saturday, weighed 7 lbs. and was 19 inches long. Healthy and happy! Big sister Honor couldn't be more excited about the new addition to our family."

"Thank you for all of your support during my pregnancy," she continued, addressing her fans. "It means the world to me."

Haven joins big sister Honor, 3. Alba announced her pregnancy in February. She walked the red carpet for her Spy Kids 4 premiere just last week. What a trooper!

Congrats! X17 was the first to report that Alba was having a girl back in July.

Sunday was quite the day for celebrity baby news -- Hilary Duff announced that she is pregnant with her first child!

Tyler Shields

Celebrity photog Tyler Shields has released a new pic of his favorite subject -- Lindsay Lohan.

Lohan is covered in fake blood and wearing only a black bra in the pic as she holds a bloody kitchen knife. Blood drips from the sides of her mouth.

In a new Q and A posted on his site, Shields talks about why Lindsay inspires him:

"She's just so daring. She's a character in herself and she is very good at it. ... With Lindsay, she knew immediately like after five minutes of shooting that this [my photography] is different, this is special."

What do you think of the new pic? Special?