Us Weekly have published photos of the Keeping Up With The Kardashians star revealing her 'tiny baby bump' in a pair of high-waisted denim jeans.
Whilst in San Francisco the mum-to-be and her two older sisters visited Alcatraz prison and rode a cable car through the city.
Khloé's weekend away marks a rare appearance for the 33-year-old who has been keeping away from the limelight since the news of her pregnancy broke.
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The reality star made her first official public appearance last week at the 1-year anniversary event for her Good American denim line.
