Lindsay Lohan kept watch over Paris Hilton's Malibu pad Saturday as the heiress hosted a beach party for some friends. Meanwhile, Paris was outside mingling with some hot guys and gals.

As we reported, Lindsay ended up leaving yesterday at 7pm to go home and change before turning back around and returning to Paris' house where she partied until 4am. These girls really have some stamina!

This is seriously cute ... Halle Berry's boyfriend Olivier Martinez playing and laughing on the beach with Halle's daughter Nahla. From the looks of it, you'd think he was her biological father!

These two obviously have a tight bond which is good, since Nahla spends most of her time in Halle's care. The actress and Nahla's father, model Gabriel Aubry, fought an extended custody battle after splitting in April of last year. It was until April of this year that the two finally reached a legal agreement concerning the custody of the daughter - the terms of which weren't released.

Halle commented to Extra TV: "Our issues were never about fighting for her. We both know a child needs both her parents. But what I want to say about it is sometimes, as a couple, you reach an impasse. We need a court and a judge to help us work out some of the delicate issues, and I'm so happy we've arrived at that place—because for her sake, this is the best way."

Seems like Nahla has two good dads in her life!

Mama bear Denise Richards was protecting her cubs Saturday at LAX!

The third-time mom cuddled baby Eloise as she gave her a bottle and made her way through a sea of photographers and other travelers. Daughters Sam and Lola were close by and also keeping an eye on their little sis. So cute!

Miley Cyrus made a real commitment to supported gay marriage rights with a new tattoo on her middle finger -- an equal sign like the one in the campaign launched by the Gay & Lesbian Rights Lobby.

The singer-actress Tweeted this shot and wrote: "All LOVE is equal."

Just a week ago when Casey Anthony was acquitted for the murder of her daughter Caylee in Florida, Miley Tweeted: "You know the world is skewed when people get away with murdering children, but we can't get gay marriage legalized in the state of California."

This is Miley's seventh tattoo. X17 got these great shots of one of her last additions -- a huge dreamcatcher on the right side of her torso -- CLICK HERE to see that gallery.

UPDATE (8.1.11 3:20 p.m. PST): Since getting the tat, Miley has gotten some backlash on Twitter from her conservative fans. She responded to one such fan: "Where does it say in the bible to judge others? Oh right. It doesn't. GOD is the only judge honey. GOD is love."

Cyrus took down her Twitter account last year after getting hateful comments for her support of gay marriage. She returned to the social networking site earlier this year.

Saturday evening, 7:30pm

Friday night
11:30pm: Lindsay and Paris hooked up at Gladstone's restaurant in Malibu for some late-night snacks.

1:45am: They went home together to Paris' Malibu summer rental and spent the night together.

Saturday evening
7:30pm: Lindsay left Paris' house and returned to her own Venice beach home (above photo).

10:00pm: Lindsay left her beach house headed to Paris' in Malibu.

Sunday morning
4:00am: Lindsay sneaked out of Paris' house, hidden by her hoodie, and returned home to Venice (below photo).

Monday morning, 4am

Wonder what zany schedule the next week will bring for these BFFs!

Kim Kardashian took a moment out of her busy schedule to celebrate someone ELSE's life on Saturday -- bringing a gift to a friend's baby shower.

The reality show superstar looked killer in her black and white animal print and her usual sky-high heels but she got all decked out for a 15-minute gift drop-off. Our photographers say she and Jennifer Meyer stayed just long enough to say hello and goodbye and they were on their way!

Kat Von D may just have gotten dumped by her fiance Jesse James, but she's not down in the dumps about it!

The tattoo artist was comforted by her dad Rene Von Drachenberg Friday as the two strolled down the streets of LA.

We still don't really know the reason she and Jesse decided to end their relationship ... or do we??? Stay tuned to X17online to read all the juicy details on this couple's breakup!

Looks like as Lindsay Lohan is hanging with her new bestie Paris Hilton, Linds' ex, Samantha Ronson, as found a new girl for herself ...

The DJ has been chillin' with Erin Foster as of late and a source tells X17online, she's "flaunting" her new girl to make Lindsay jealous ...

SamRo and the blonde hottie were out together earlier this month in Malibu, grabbing coffee. That was July 3 -- coincidentally, Lindsay's birthday weekend -- when she was in Malibu. Hmmm ...

Is Erin really Sam's new girl or are the two just friends?