Heiress Petra Ecclestone knows how to travel in style!

We caught up with Ecclestone as she headed to the gym and the doctor in LA -- and even in a casual hoody and leggings, Ecclestone works her wealth!

She was carrying a fabulously expensive Birkin bag and getting carted around in a custom Range Rover. Check out the back!

These besties just can't get enough of each other!

British heiress Petra Ecclestone, hubby James Stunt and heir Brandon Davis hit up Boa in West Hollywood again Saturday night. They were just there a week ago!

Boa was quite the melting pot of celebs that night -- also at the restaurant were Marilyn Manson, Girls Gone Wild mogul Joe Francis, Michael Lohan and Tara Reid and her new hubby.

If only they had all sat at the same table. Talk about dinner conversation! See photos of all the famous faces from the evening in our gallery below.

She's officially an LA girl now!

Billionheiress Petra Ecclestone looked ultra sexy in a pair of skin-tight purple pants and a black tank, as she cooled off with a sweet treat at Pinkberry in LA, on Thursday.

The gorgeous 22-year-old recently relocated to LA after marrying businessman James Stunt, and purchasing Candy Spelling's massive 57000 square-foot mansion for $85 million, last June.

The Formula One heiress was recently gifted a Rolls Royce by her new hubby, who had it hand delivered (with a bow on top!) to the Beverly Wilshire Hotel where the couple is currently staying during renovations to their new home.

Brandon Davis spent the better part of Friday with his new pal Petra Ecclestone, and whether it was going to Madeo or getting spray tans, they seemed to be joined at the hip! Mischa Barton's ex-boyfriend was later spotted chilling with Petra and her entourage at the Chateau Marmont, and after taking off from the Hollywood hot spot, the group headed to a private house party in the Hills. What a day!

So what's her sister Tamara been up to? She's been busy modeling the latest lingerie collection by Ultimo, and we have to say, she certainly looks like a million bucks! Click after the jump to see another hot shot of Tamara...

Petra Ecclestone may be a billionaire, but that doesn't mean she needs to run out of the house totally done up.

The Formula 1 heiress ran errands around Los Angeles Thursday afternoon, stopping at a hair salon before shopping at the Sephora store in the Century City Westfield Mall. She finished off her day of spending by grabbing an Iced Blended drink to go from the Coffee Bean & Tea Leaf in Beverly Hills.

Even though Petra went sans makeup, she still showed signs of her very well-to-do life, toting around her pricey neon yellow Birkin bag all day.

Not too shabby!

If your little sister buys the most expensive home in America and then has an insanely extravagant wedding - complete with a Black Eyed Peas performance - you'd probably want to steal the spotlight back too. And that's just what Tamara Ecclestone is doing!

The eldest daugther of Formula 1 billionaire Bernie Ecclestone and Croatian model Slavica is now starring in her own reality show - and shopping for a home as over-the-top as Petra Eccelstone's recently acquired (and paid for in cash!) $85 million Spelling mansion.

Tamara Ecclestone: Billion Dollar Girl will premiere November 4 in the U.K., and she's been in talks with major Hollywood studios to promote it in the U.S.

She should have no problem with that! Not only does she have Hollywood practically salivating over her no-holds-barred lifestyle, she's spending over $1.5 million on Amazonian rock crystal to build a luxurious bathtub in her London home.

Tamara confirmed that the price tag is no rumor, telling the U.K.'s Daily Mail:

"No, it’s completely true. They’ve gone to find this crystal which will be turned into my bathtub. It’s costing £1 million because I’ve got to reinforce the floor and I’ve had to pay for everyone’s travel and the hauling back and polishing of the crystal. But I spend a lot of time in the bath so it’s worth it."

Ironically, this is a girl who claims she was brought up grounded, saying her father raised Tamara and Petra to "appreciate money and not to take it for granted."

We would appreciate being able to buy a $1 million bathtub too. This is so a reality show we're watching if it comes to America - Tamara has Hollywood written all over her already!

Dressed to the nines in a body hugging Herve Leger dress and sky high Christian Louboutin heels, Billion heiress Tamara Ecclestone arrived at club Voyeur in Hollywood to meet up with new pal Brody Jenner Thursday night.

The Formula 1 heiress and her younger sister, Petra Ecclestone, have been making a splash in LA ever since newlywed Petra purchased Candy Spelling's mansion for $85 million, last June. It appears the sisters have been taking over the Hollywood scene ever since.

Do we hear a reality show coming soon?

Billionaire heiress Petra Ecclestone and new husband James Stunt grabbed dinner at Madeo alongside sister Tamara and her beau Omar Khyami.

Both sisters flaunted their sexy and tanned bodies. Petra also couldn't help but flash her enormous wedding ring. Talk about blingtastic!

Makes you wonder who footed the dinner bill? We have a feeling mega-rich Bernie Ecclestone doesn't mind shelling out the dough. Thanks daddy!