Another wild night for Lindsay!

Lohan partied at 1Oak Saturday night in New York, met a guy and invited him back to her hotel room at the W Hotel.

Lindsay's new pal, Christian LaBella, took photos of Linds with his cell phone, according to reports, so Lohan grabbed the phone, prompting LaBella to punch and choke the Liz & Dick star, according to and NBC New York police source. Lohan ran out of the room and pulled a fire alarm to get help.

LaBella, 25, has been charged with assault and harassment after being arrested at 6 a.m.

Lindsay's spokesperson tells X17online:

"Lindsay was assaulted early this morning in a New York hotel. While she did sustain some injuries, she was not hospitalized. The assailant was arrested and is currently in police custody. Lindsay has spoken with police and is fully cooperating with the investigation."

Former American Idol judge Steven Tyler took to the mean streets of Los Angeles on this slime green, three-wheeled bad boy.

The Aerosmith frontman was decked out in a ruffled pirate blouse, embroidered leather pants and riding goggles as we spotted him leaving a sushi dinner at Matsuhisa in West Hollywood.

And it was all fun and games until one videographer (not from X17!) started to upset the rocker ...

Tyler grabs the paparazzo's video camera, introduces him as an "asshole" and slaps his hand. When the guy insists on asking questions, Tyler says to him, "Ask my why I carry a knife ... 'Cuz I'm going to a party!" Tyler then pulls a knife out of his belt! Luckily for the paparazzo, Tyler puts the knife back in it's holster and leaves Matsuhisa on his custom Indian Larry "Rat Fink" motorcycle.

Rihanna hit up her favorite restaurant last night, Giorgio Baldi in Santa Monica, wearing a studding black and white dress with simple black heels.

The short-hair beauty accented the look with bright red lipstick, lending a bit of rock-and-roll to her classic dress.

We choose this over her silk pajama look any day!

Katie and Suri made a mad dash for their chauffeured car after ballet class in NYC, on Saturday.

Suri was a pink princess in pink-soled Crewcuts boots, with a pink and lavender dress, a pink ballet sweater, bun warmer and bag.

Katie, meanwhile, carried a black Working Two-Tone Bag from her label's partnership with Valextra. The Holmes & Yang collection for the luxury Italian leathergoods brand is producing the new must-have bags -- for $4350 a pop!

Not pictured here ... Tom Cruise, of course. He's filming his upcoming movie All You Need Is Kill in London and keeping his distance from Katie and Suri. A recent report claimed Tom was dating Cameron Diaz, with whom he co-starred in Vanilla Sky in 2001 and Knight and Day in 2010. Cruise's rep, however, denied the reports, stating simply, "It's false. They are friends."

Anne Hathway, 29, and fiance Adam Shulman tied the knot today on the scenic northern California coast in Big Sur -- where Natalie Portman and Benjamin Millepied married just more than a month ago.

The Dark Knight star wore a custom-made Valentino gown at the sunset ceremony, in front of about 180 guests.

The Oscar-nominated Hathaway began dating the actor-turned-jewelry designer Shulman in November 2008.

Looks like someone's making the transition from bodyguard to father figure rather seamlessly!

On Saturday Heidi Klum and her beau Martin Kristen were snapped at 7-year-old Henry's soccer game in Brentwood, and the supermodel and her new beau kept an eye on Leni, Lou and Johan as they cheered on the supermodel's oldest boy during his game.

Heidi recently admitted on Katie Couric's show Katie that the two were an item, but she noted that the romance had "just started" and when asked if it was a relationship, she added, "I don't even know if I can call it that. I don't know." We're guessing if it wasn't official before, it definitely is now!

Christina Aguilera dined at Spago in Beverly Hills last night with her boyfriend Matt Rutler, and we're not sure if it was a combination of cocktails or high heels, but the 31-year-old singer needed quite a bit of assistance getting to her car -- at one point she seemed to have no less than three people helping her walk!

Xtina showed off her newly dyed pink and purple hair, and as always, she wore her bright red lipstick and a form-fitting dress. Maybe she was celebrating the release of her music video for "Your Body"? Party on!

Before a family lunch with sister Kim and baby daddy Scott Disick, Kourtney Kardashian and her brother Brandon (step-brother if you want to get technical) were snapped shopping for kids clothes with her son Mason. Hopefully they picked out a few duds for little miss Penelope too!

While we're not entirely sure what Kim was blabbering about, her new kitten Mercy has her own Twitter account, but it's in no way connected to the reality starlet. Kim recently blocked the user @KardashianKat, who lists her location as "Probably in some stupid purse."