No one said being a pop star was easy!

Britney Spears appeared exhausted while exiting a dance studio in Thousand Oaks today. Despite the tired look on her face, the singer still seemed to be in high spirits as she walked to her car.

The songstress sported a completely different expression while posing for a SHAPE magazine cover spread in which she gleefully bent her body into yoga positions.

The former X Factor judge is most likely practicing routines for her new Las Vegas show that's slated to open this fall.

"The [Vegas] performances won't be simple -- they'll be a massive party from start to finish," she told SHAPE. "And to pull this off, I have to be in top condition and running at full speed."

Furthermore, Brit-Brit will be collaborating with will.i.am for her eighth album. The duo, who already teamed up for the songs "Big Fat Bass" and "Scream & Shout," have been meeting and clocking studio hours for the past three months. They're currently in the process of developing a more personal relationship with one another in preparation for the album:

"Before we even start we've had these juicy sessions, where we've been bonding, building the trust and comfort. I've never worked like this before -- not even the Peas," will.i.am told Billboard.

They duo will begin recording music this week ... and we can't wait to hear a new track!

What we wouldn't give to be at the dance studio and watch Brit Brit break it down!

Britney Spears arrived at the California Music Academy building today for dance rehearsals, and the pop princess must have needed a pick-me-up because she was chugging a can of Red Bull on her way in!

The "Toxic" singer apparently needed some wings to get movin'!

The Grammy winner has been hard at work on another album, which Will.i.am is executive producing, and the Black Eyed Peas lyricist recently revealed how they came up with inspiration for the new tunes.

"I wanted to just go to lunch for two months, which is totally different from how you typically do it. I said, 'Let's talk about what you're excited about. Let's talk about things you've done in your career, what you're happy about. Let's talk about spending time with your kids, let's talk about your breakup. Let's talk about how now you're single, how independent you might feel.' We started talking about all that stuff. So I said, 'Do you mind if I write this down? I don't mean to impose but I want to interview you. I need this to create a filter," he explained.

This could be her best record yet!

Oops ... she did it again!

Britney Spears looks as fit as ever in the June issue of SHAPE Magazine. The songstress showed off her svelte shape in yoga poses for the mag. She sported a pastel multi-colored sports bra and lilac leggings that exposed her toned arms, sculpted abs, and defined legs.

In the photos, the blonde beauty stands in a warrior pose and bends backwards, holding onto her ankles in a contorted camel pose.

The singer needs to stay in tip top shape for her upcoming projects. She will be collaborating with will.i.am for her new -- still untitled -- album. The duo, who already teamed up for the songs "Big Fat Bass" and "Scream & Shout," have been meeting and locking in studio hours for the past three months. The former X Factor judge is also prepping for her new Las Vegas show that's slated to open this fall.

Britney told the mag that she follows the Nutrisystem program and does yoga regularly to stay toned.

"I'm doing 90 minutes of yoga twice a week in addition to a lot of cardio -- hour-long sessions three times a week with my trainer, Tony Martinez," she said in the cover story. "The [Vegas] performances won't be simple -- they'll be a massive party from start to finish. And to pull this off, I have to be in top condition and running at full speed."

By the looks of this photo spread, she won't have any trouble pulling it off.

She's gotta have her java!

On Friday, Britney Spears brought her boys Sean, Jayden and boyfriend David Lucado to a Starbucks drive-thru in Woodland Hills for some quick caffeine.

Things seem to be back on track for the 31-year-old entertainer with her new relationship and new Las Vegas residency at Planet Hollywood starting this fall.

Things are looking up for Brit Brit!

We guess she has moved on from her red bracelet-wearing Kabbalah days!

Britney Spears and boyfriend David Lucado spent yesterday afternoon at the Center for Spiritual Living in Thousand Oaks, and the pop princess looked absolutely giddy and carefree after the session! The facility claims to "support a positive transformation of both our personal lives and the world itself," so we're dying to know what improvements Brit Brit is trying to make!

After they finished healing mind and body, the couple picked up some groceries at the local supermarket. We noticed flowers in the Southern belle's kart, so we hope that her boy toy was a gentleman and bought those for her!

The "Toxic" singer showed some midriff in a cropped T-shirt, and even after all these years and two kids, she still has the best abs in the business!

It's been a while since we saw these two together!

Britney Spears and boyfriend David Lucado ran errands in Thousand Oaks on Wednesday, and after rocking some questionable attire this week, she got all dolled up in a polka dot blouse, boots and dark skinny jeans.

So just how serious are things between the couple? After dating for just three months, apparently Brit asked her man to head to Las Vegas with her! "Britney asked him to move with her when she makes Vegas her new home in November," according to a source for Life & Style. "David said, 'Yes!' Her team is fine with it. Just as long as she doesn't fall apart. Everyone has to raise an eyebrow, but her team is okay with it. Everyone just wants Britney to be happy."

Britney is reportedly thisclose to inking a two-year residency with Caesars Entertainment, but we have yet to receive confirmation on which venue and how often she'll be performing.

Britney Spears covers the June issue of Shape magazine, and the 31-year-old singer shows off her toned bod (and belly ring!) in a hot white bikini.

We always catch Brit at the gym, and she revealed what she does to stay fit. When asked specifically about her booty, she says, "I like it, then again, I hate it. I’m in my 30s now, so I have to work harder to keep it 'up.'"

Britney says she relies on yoga and the Nutrisystem diet program to keep her weight in check, but she said admits that it's hard. "Dieting is tough because my specialties are spaghetti, brownies and chocolate chip cookies," she says.

Gotta love her honesty!

Britney Spears is not a fan of working out, y'all.

The songstress looked down in the dumps while heading to the gym today in Thousand Oaks. She chatted on her cell while closing her jacket with her free hand.

We later spotted her sipping on tea from Coffee Bean. Brit Brit had changed out of her gym clothes by then, swapping her bizarre robe/blazer for a stained white top over a hot pink bra. Don't worry; we're also screaming and shouting at the screen.

Although she no longer needs to be camera ready (she won't be returning to The X Factor next season), the singer probably still wants to stay fit for her upcoming tour.

When she's not working out, Britney is recording new music. Rapper will.i.am will executive produce her upcoming -- still untitled -- album. The duo, who already teamed up for the songs "Big Fat Bass and "Scream & Shout," has been meeting and locking in studio hours for the past three months.

Spears recently participated in a Google hangout with the former Black Eyed Pea and praised the multi-talented musician.

"I think he gets our generation," she said. "His energy is just electric. He's a charmer."

Spears will also have a song on July's Smurfs 2 soundtrack.