The 30-year-old put in a glamorous appearance with her sisters Khloe and Kourtney at a book signing in Culver City.
The girls were at the Borders store to promote their autobiography Kardashian Konfidential.
The reality star wore a striking black and white curve-hugging dress that flattered her famous figure.
The look of love? Kim Kardashian was radiant yesterday at a book signing with her sisters
She teamed the monochrome outfit with some black platform Christian Louboutin heels, and her make-up and glossy dark hair were perfectly groomed.
Khloe, 26, wore a one-shouldered floor-length patterned dress and platform heels.
Curves ahead: Kim put in a glamorous appearance in a curve-hugging monochrome dress at a Borders at Century City in California
Kim, who has previously dated American footballers Reggie Bush and Miles Austin, admitted to Ryan Seacrest yesterday that she finds it hard to stay single.
The socialite has been dating Halle Berry's ex Gabriel Aubry for a few short weeks, and despite attempting to be discreet about the new romance, she couldn't help hinting at her current happiness.
'I really do want to stay single,' she told the radio DJ, who also produces her series Keeping Up With the Kardashians.
'It's really hard when you meet amazing people, and gorgeous people,' Kim told Seacrest on his radio show. 'I'm dating - I'm definitely dating.'
Sister Act: Kim appeared in store with sisters Khloe and Kourtney to promote their autobiography Kardashian Konfidential
They were also spotted sneaking out for a secret date to the cinema over the Thanksgiving weekend.
Celebrity website X17Online report that the Canadian model, who has a two-year-old daughter, Nahla, with Halle Berry, spent the night at Kardashian's Los Angeles home on Wednesday.
Product placement: The book is the latest in the Kardashians' empire, which already includes fragrances, swimwear line and reality shows
Ready for my close-up: The star's glamorous appearance was a big difference from her natural look the day before
But Kim says she is wary of being seen out on dates. 'If I'm photographed on five different dates, I am the town "slore", and I could have never hooked up with any of these people,' she said.
'Sometimes I just wanna date whoever - even if I never sleep with someone, and I'm photographed with three different guys, they assume I've slept with all three guys.'
While Kim was more than happy to pose for pictures at the book signing - and earlier, when the sisters made an appearance on TV show Extra with Mario Lopez - she certainly wasn't ready for her close-up during a trip to the beauty salon the day prior.
Kim kept her head down and attempted to hide her face behind large sunglasses as she dashed from her salon to her Rolls Royce.
Star treatment: Kim was given an escort as she arrived to film Extra at The Grove shopping centre earlier in the day
Publicity trail: The sisters chatted with Extra host Mario Lopez
The socialite was clearly disgruntled to be spotted without her usual armoury of full-on hair and make-up.
But it was all smiles again for Kim back on the publicity trail at The Grove shopping centre in LA for the Extra TV spot.
Her growing star power was evidenced in the hordes of screaming fans and the police escort required to get the sisters back to their cars after the show.