The heiress must be prepping for bikini season!

Paris Hilton and her beau River Viiperi attended a pilates class in Studio City yesterday, and the Simple Life star looked a little exhausted from her toning session when we caught her leaving the studio.

Speaking of studios, Princess P's new pop album for Cash Money Records is almost done! "I'm in the studio and almost finished with the album. They're just finishing up all the paperwork and there will be an announcement soon," she recently told The Daily Beast.

That's not the only project on the blonde beauty's schedule, though!

The reality star just opened her 44th Paris Hilton store, launched her 15th fragrance, and, on top of it all, is set to open a hotel property in Manila next year.

She's the hardest working woman in show biz!

What a hot couple!

Paris Hilton and boyfriend River Viiperi got their party on at Bootsy Bellows in Hollywood last night, and we can't believe after all these years, the heiress hasn't tired of the nightclub scene!

The "Stars Are Blind" singer looked ravishing in a red mini dress, while her beau channeled his inner Justin Bieber with his outfit choice!

Queen P's former bestie Kim Kardashian is about to give birth to a baby girl, and although there were rumors the two socialites were on the outs, P. Hilty has nothing but love and well wishes for her childhood pal.

"I'm so happy for [Kim]. She's always wanted a little princess, I can't wait to see how she dresses her up. It's going to be a beautiful baby," she told ET at The Bling Ring premiere.

When are you going to have a little princess of your own, P?!

Paris and her mom Kathy Hilton lunched at the Ivy on Wednesday, and after that the ladies shopped at Intermix.

So what was next on the agenda? Stopping by Nicole Richie's mom's house with some goodies! Yesterday afternoon Brenda Richie tweeted, "Paris, I really enjoyed your visit with me at my home 2day! Thank you so much for the great Paris Hilton Loot!" Aww!

Not only do we love the blue dress, but that big, sexy hair? That's hot!

Paris Hilton flew back from Cannes on Sunday night, but it wasn't long before she was on a plane again!

The heiress is currently en route to Hawaii, and just a few hours after unpacking her party dresses, P tweeted, "Finally finished packing for Maui. Can't wait to be back in Paradise! #FuninTheSun ... On the plane, it's not even 9 am and the stewardess just offered us a mai tai or mimosa to drink. Only on a flight to Maui. Lol."

We're jealous of her travels ... and the tan she's gonna have when she gets back!

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Paris Hilton and River Viiperi attended a private yacht party in Cannes on Monday night, and the heiress looked smokin' hot in a low cut leopard-print dress. And her model beau looked pretty dapper too ... such a beautiful couple!

Paris and River recently celebrated their one-year anniversary, and last week at the Gotha Club in Cannes, patrons reported that the lovebirds couldn't keep their hands off of each other as they danced the night away.

On May 18 River tweeted a pic of his lady love and wrote, "Happy one-year anniversary to the gorgeous, beautiful, perfect, most amazing and most caring girl on this planet," and referred to Hilton as "my girlfriend, my future wife, my life." Awww!

Earlier this month Paris told Wendy Williams that she was hoping to settle down and start a family with Viiperi. "I think that's the meaning of life to have children and have a family one day," she said. "I am so in love. I feel so lucky to have met him. He's one of the kindest, most loyal men I've ever met in my entire life, and he treats me like a princess."

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They clean up nice!

Paris Hilton And River Viiperi looked simply glamorous while experiencing a taste of the night life in Cannes, France over the weekend.

The 32-year-old socialite attended the famed film festival to promote The Bling Ring with her model beau in tow while also seeing what the vibrant city had to offer.

Looks like they're doing it up!

Paris Hilton and boyfriend River Viiperi attended the after party for The Bling Ring in Cannes last night, and it looks like the heiress really hit it off with it girl Cara Delevingne!

P tweeted, "I loved The @BlingRingMovie! Sofia Coppola is such a talented director. @EmWatson and the rest of the cast were amazing! #AMustSeeFilm," and later she posted the pic below and wrote, "Met one of my idols tonight at The @BlingRingMovie after party. The amazing Christian Louboutin! #Legend #Icon #RedBottoms."

Paris Hilton and beau River Viiperi arrived at LAX yesterday to jet off to the Cannes Film Festival, and the heiress had nothing but praise for Angelina Jolie after her recent admission she underwent a preventive double mastectomy.

"I think she's very brave and it's definitely going to save a lot of other women's lives," the blonde beauty said when asked about the star's recent surgery.

So have the headlines motivated Princess P to get checked herself?

"Definitely. It runs in my family as well. I lost my grandmother to it, so I'm going to get checked," she added.

We're glad Saint Angelina has inspired the socialite to be proactive about her health!