'Never lose time for you!' Kim Kardashian tweets advice to new mothers before Christmas shopping with Kourtney and their babies

New mother Kim Kardashian and her sister Kourtney did a little Christmas shopping in Beverly Hills on Monday.

The 33-year-old reality star and her 34-year-old sibling were dressed fashionably as they looked after their girls North, aged five months, and Penelope, aged 17 months.

Just before the outing the fiancée of Kanye West tweeted: 'Never lose time for you. Go to the gym, get a facial, or manicure to feel good so you can go home and be a good happy mom at home.'

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Mothers' day out: New mother Kim Kardashian and her sister Kourtney did a little Christmas shopping with their babies in tow in Beverly Hills Monday

North was peacefully tucked away in her stroller, and there was no sign of Kourtney's four-year-old son Mason.

The Keeping Up with the Kardashians star flashed her 15-carat Lorraine Schwartz diamond engagement ring as she pushed the pram through tourist-filled streets.

On Sunday night, the former sex tape star fielded questions from her 18.8 million Twitter fans using Mobio Insider.

Beverly Hills fun: Kim flashed her 15-carat Lorraine Schwartz diamond engagement ring as she pushed her six-month-old daughter North West through the tourist-filled streets

Ladies who lunch: The 33-year-old reality star was casually dressed in all grey while her 34-year-old sibling (L) took the plunge in a silky top and leather trousers

Strolling along: Baby Nori was peacefully tucked away in her stroller, and there was no sign of Kourtney's four-year-old son Mason

During the session the brunette socialite also announced that she would not take part in next year's annual Kardashian family Christmas card.

She wrote: 'We won't be doing it this year. This year we got some good ideas and gonna brainstorm for next year. Tradition is everything. This family card was so fun!'

New picture of North! The selfie enthusiast recently revealed her favourite thing about Nori is 'her baby smell and her laugh' and Kim and Kanye West are 'researching' schools

Kanye West defends his infamous ego in speech to fans

Put yourself first: On Sunday night, the former sex tape star fielded questions from her 18.8 million Twitter fans using Mobio Insider

Big news: The brunette socialite also announced that she would not take part in next year's annual Kardashian family Christmas card

Icons: The Kardashians invited famed fashion photographer David LaChapelle to create their annual Christmas card. The troubled shoot was featured on Keeping Up With the Kardashians: A Very Merry Christmas, which aired Sunday

No surprise: After this year's garish, tabloid-strewn monstrosity shot by David LaChapelle it's no wonder why the most famous Kardashian would want out

And after this year's tabloid-strewn monstrosity shot by David LaChapelle it's no wonder why the most famous Kardashian would want out.

Kim seemed to hint that she and Kanye would be having their own separate portrait with Baby Nori.

The selfie enthusiast revealed her favourite thing about North is 'her baby smell and her laugh' and the pair are 'researching' schools.

Getting there: Kim made her way to the car, showing off her slimmed down figure

Sister's unite: Kim picked up Kourtney and her daughter Penelope for some family shopping

There you go mama! Kim helped her older sister into the car

Taking care of baby: The reality star carried her niece Penelope out of a shop

Doting aunt: Kim carted the youngster around, who fashionably sported a motorcycle jacket

It's hard to believe the self-proclaimed power couple - nicknamed Kimye - have only been together for 20 months.

The 36-year-old rapper, who frequently calls himself a genius, defended his infamous ego at his Anaheim concert on Friday night.

'[The media tries] to say I have a big ego and s**t and call me arrogant. Well, tonight I want to explain to y'all just how arrogant I am. I'm so arrogant that I actually think I can outsmart the media,' the 21-time Grammy winner said onstage.

Kimye: It's hard to believe the self-proclaimed power couple have only been together for 20 months

'Everything I do is actually about you!' The 36-year-old rapper, who frequently calls himself a genius, defended his infamous ego at his Anaheim concert on Friday night

Homecoming: The Mercy rapper - along with opener Kendrick Lamar - will next take his on/off-again Yeezus Tour to the United Center in his hometown Chicago on Tuesday

'I don't give a f**k about looking cool or being dope. I was dope since age motherf*****g five. But they try to make it seem like my whole purpose is about me. But where I think I have them outsmarted is, everything I do is actually about you.'

The Mercy rapper - along with opener Kendrick Lamar - will next take his on/off-again Yeezus Tour to the United Center in his hometown Chicago on Tuesday.

And the ninth season of Keeping Up with the Kardashians premieres January on E!