Paris Hilton and Janet Jackson both chose white gowns for amfAR's Cinema Against AIDS party at Cannes ... and no one is objecting!

Both ladies look absolutely stunning while showing off plenty of skin in their custom couture dresses.

The heiress rocked a Basil Soda creation while Ms. Jackson wore an Emilio Pucci white silk cady halter gown

Once you go white ...

Paris and Nicky Hilton attended the star-studded de GRISOGONO bash at Hotel Du Cap-Eden-Roc in Antibes, France last night, and the sexy and stylish sisters looked amazing as they posed for pictures on the red carpet. Fellow guests included Heidi Klum and Adrien Brody, and this is the eleventh consecutive year the jewelry company has held their party at the swanky hotel.

Today Paris had a shoot with famed photographer Ellen Von Unwerth, but she took to her Twitter to set the record straight about the hot man in her photos. "Before any rumors get started ... The guy in my photoshoot with Ellen Von Unwerth today is not a new love interest," she wrote. "Just the model Ellen hired."

Glad we cleared that up ... and now we can't WAIT to see this pics!

Paris Hilton and Kim Kardashian both looked drop dead gorgeous while partying in Cannes ... and they were on the same yacht!

The sexy reality stars partied together on P. Diddy's private yacht in the south of France. Ooh la la!

Kim cruised to Cannes with her new beau Kanye West who is debuting a short art film Cruel Summer at the festival.

As for Paris ... she's enjoying a good party. Loves it!

Spread Pictures

We're sure Paris Hilton loved her rave reception when she arrived at Cannes!

After partying hard in L.A. with Lindsay Lohan, Samantha Ronson and a bevy of others, the 31-year-old reality star was greeted by fans and photographers alike in front of the Canal + Television Studios.

While the hotel heiress is probably not in any of the movies debuting at the prestigious film festival, Paris is probably going to do what she knows best: have a blast!

Lindsay Lohan, Samantha Ronson and Paris Hilton definitely know how to party ... all night!

The 25-year-old Mean Girls starlet started her night at a Hollywood club rockin' Louboutin booties before heading to the private Hollywood Hills party.

The three ladies joined Paris' younger brother Barron Hilton at the Hollywood Hills mega-mansion for some late night fun that lasted until 7am this morning!

Police tell us that one of the neighbors in the residential community filed a noise complaint due to the blaring music.

In our exclusive photos, you can see all the party-goers leaving the mansion after their all-nighter.

Paris and Brandon walked out of the house through the garage. Looks like it was definitely a rough night!

Paris Hilton was snapped leaving the hair salon in Beverly Hills this afternoon, and the heiress was definitely dressed to impress in a sheer black maxi, but it sounds like she's still tired from her recent vacation.

A few hours ago P tweeted, "So jet lagged, went to bed so early last night and just got up. Still on Europe time. Ready for another busy day." Aww, hopefully she'll be in the right time zone tomorrow! We were totes having Paris withdrawals while she was overseas...

Paris Hilton is the queen of cut-outs!

The sexy heiress rocked a killer LBD while leaving Mr. Chow in Hollywood. Love the pink fur, P.

So chic!

And it's not even Mother's Day yet ... talk about the best daughter ever!

Paris Hilton and her mom were snapped at The Grove in Los Angeles this afternoon, and the ladies chatted with Extra's Maria Menounos about Kathy's new clothing line, the aptly titled Kathy Hilton collection.

P was also joined by her aunts, and she tweeted, "At @TheGroveLA for @KathyHilton's Fashion Show with @KathyHilton @KyleRichards18 @KimRichards11 & my beautiful cousins. I love my family!" Hey, so do we! And that white dress? Loves!