Mary-Kate Olsen Runs Errands After Hamptons Weekend

Mary-Kate Olsen dons her usual all-black look while out and about on Friday afternoon (August 29) in New York City.

The 28-year-old fashion mogul had her bodyguards with her for her day out.

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The day before, Mary-Kate rode her horse while competing in the Hampton Classic Horse Show in Bridgehampton.

Earlier that week, Mary-Kate and her twin sister Ashley posed with designer and co-host Lisa Perry while stepping out in style for the 2014 Hamptons Paddle & Party For Pink event held at a private home in North Haven, N.Y.