By Heidi Parker and Iona Kirby
Published: 14:15 EST, 30 July 2014 | Updated: 00:43 EST, 31 July 2014
Kim Kardashian usually has such a serene look on her face after an intense workout.
But on Wednesday morning the 33-year-old reality star looked tense as she kept her eyes on her cell phone while exiting Barry's Bootcamp in LA.
The day before the wife of Kanye West tweeted her disapproval over Adrienne Bailon speaking negatively about brother Rob who has been on a downward spiral for more than a year as he's gained weight while battling depression.
Scroll down for video...
No smiles here: Kim Kardashian looked glum as she exited Barry's Bootcamp in LA on Wednesday morning; the day before she had called out her brother ex-girlfriend Adrienne Bailon on Twitter
Suddenly pro Rob: The 33-year-old star looked pained which may have been from her outburst the day before; Kim's support of her troubled sibling is a surprise because on her E! show she has trashed him
[She didn't mince words: Bailon, pictured on July 12, called her ex 'disloyal'
The E! star was makeup free as she left the workout facility.
Her long dark tresses covered much of her face as she looked at her Blackberry while holding a bottle of water and a pair of keys. Later, she slipped on a pair of dark shades.
The Keeping Up With The Kardashians star wore head to toe dark colors and showed off a trim waistline with a zipped-up hoodie over a low cut tank top that displayed her ample cleavage.
The tank was purposefully pulled down over her leggings.
Black trainers with white accents gave her a sporty look.
The mother to North, aged one, appeared to be alone as there wasn't even a security person in her vicinity.
On Tuesday the Kardashian Kollection designer had called out Adrienne for telling Latina magazine that she had been cheated on by her brother, who Kim has not seemed to be too close to in the past few years.
Kim wrote, 'Funny how she says being with a Kardashian hurt her career yet the only reason she has this article is bc she is talking about a Kardashian.'
And she wasn't done, immediately following it up with a tweet that said: '#LetItGoooooLetItGoooooo (FROZEN VOICE),' before adding: 'So sad when people try to kick my brother when he is down #FamilyForever.'
Showing off a trim waistline: The E! princess accented her tiny mid section with a zip-up hoodie
Casual for some crunches: A pair of leggings and a long tank top pulled over her derriere complete her sweat session look
More angry tweets coming?: Kim took off her sunglasses to reveal a makeup free face as she checked out her Blackberry; the beauty had written angry messages to Bailon just the night before
Tressed out: The wife of Kanye West wore her dark hair down over her shoulders
Kim never denied that Rob had stepped out on Adrienne.
Cheetah Girls star Adrienne had opened up to Latina because she said she was tired of people still give her a hard time for hurting the black sheep Kardashian.
Adrienne pointed out that Rob wasn't innocent, saying: 'It's common knowledge that he cheated on me. It always bothered me that people were like, "Pero, why couldn't you forgive him?"'
Showing off her assets: The daughter of Kris Jenner managed to make her workout look sexy as she pulled down her top to reveal ample cleavage
Back to those squats: The ex-wife of Kris Humphries showed off her famous backside as she walked into the Bootcamp facility
Still down: Kim couldn't let go of her sombre expression as she strolled around with her keys at hand
'#FamilyForever': Kim didn't hold back as she criticised her brother's ex-girlfriend, and said the Kardashians had helped rather than hindered her career
Sticking together: Kim may have had her differences with Rob, but she will always stand up for him, The pair are pictured together here in August 2011
Keep up with the latest Kim Kardashian videos
'Why are women always the ones who have to forgive? If you cheated on a man, he would be like, "You're disgusting, and I want nothing to do with you." But women, we're supposed to be like, "He messed up. He made a mistake."'
And the 30-year-old was quick to affirm that she didn't have any regrets about ending things with the reality star, 27.
'In my situation, it wasn't like, "Oh my God! I made a mistake!"' she admitted. 'He strategically planned things out so that he could cheat on me, and that to me was so disloyal.'
Defence: Kourtney also tweeted her disdain for the singer
Bemused: Khloe said she felt she and Rob's ex were 'cool' but tweeted she now knows otherwise
The ex factor: Adrienne opened up to Latina magazine about her past relationship with the sock entrepreneur
Back in the day: The Cheetah Girls star claims she ended things with Rob when he cheated on her. They are pictured here in July 2008
But one thing Adrienne does regret is appearing on Keeping Up With The Kardashians - something that clearly riled Kim up even further.
'To be stuck with that Kardashian label, that was so hurtful to me and to my career,' Adrienne revealed. 'I probably realised that too late – not that it would've affected my decisions in terms of who I dated, but it would've affected my decision to appear on the show.'
The star explained that she didn't think 'anyone would even care,' but is still getting grief.
'To this day, people will still say, "You ruined Rob's life!" and I'll think, "Damn, I was still playing with Barbie dolls when I met him."'
Regrets: Adrienne, pictured last month, admits she wishes she hadn't appeared on Keeping Up With The Kardashians. Rob is seen right in May
While she admits she was very young when she fell for the sock entrepreneur, that didn't stop Adrienne from getting a tattoo of his name. She explained to Us Weekly: 'I was genuinely in love with him and thought, "If he's going to do this, I'm going to do this, too."'
However the singer and actress, who these days is loved up with Roc Nation's Lenny S., is now getting the inking removed.
'I have not been in a relationship with Rob for six years,' she told the publication earlier this month. 'And I've been with my current boyfriend for five years. I think it's time to remove it.'
Adrienne appears on the cover of Latina's September issue, looking flawless with gold eyeshadow, nude lips and an embellished black and gold dress.
She's moved on: The singer and actress has been dating Roc Nation's Lenny S. (who she is seen with in October) for five years, and is getting her Rob tattoo removed
This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers.
