Making us feel rather jealous, the Keeping Up With The Kardashians wore just a satin slip top and jeans to nip to her local store on Tuesday afternoon (26 March).
Bare arms in March? We so want to live in California.
As always, the reality star was dressed to impress, with perfectly curled hair, flawless make-up, high heels and a fabulous handbag completing her look.
Kourtney's just back in sunny Los Angeles after a whirlwind visit to chilly New York, where she was promoting the Kardashian sisters' latest venture, a children's clothing line.
Kardashian Kids, available at Babies R Us stores in the US, is a line of clothing for little girls up to 24 months. (Sorry, baby boys!)
Kourtney used her own experience of being a mother to daughter Penelope, one, as inspiration for the designs, while sister Kim is also mother to a baby girl, North West, born in June 2013.
Meanwhile, while Kourtney was back home, her sister Kim was over in New York promoting her much-talked about Vogue cover.
Plenty of fashion fans were rather unhappy at last week's announcement that Kim and her rapper fiancé Kanye West had landed Vogue's April 2014 magazine cover, with some suggesting reality star Kim hadn't done enough to earn the coveted spot.
Anna Wintour, however, has defended her decision, saying last week: "Part of the pleasure of editing Vogue, one that lies in a long tradition of this magazine, is being able to feature those who define the culture at any given moment, who stir things up, whose presence in the world shapes the way it looks and influences the way we see it. I think we can all agree on the fact that that role is currently being played by Kim and Kanye to a T. (Or perhaps that should be to a K?)"
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Is Kourtney's son Mason the most stylish kid around? These photos suggest so!