Lauren Conrad & William Tell: Fairytale Halloween!

Lauren Conrad sports pretty blue wings as she heads to a Halloween party as a fairy on Saturday night (October 26) in Hollywood.

The 27-year-old fashion designer was joined by her fiance William Tell.

PHOTOS: Check out the latest pics of Lauren Conrad

“For the next 30 days, 20% of @ctznsofhumanity product sold at their LA shop will be donated to @Thelilmarket artisans. Time to go shopping!,” she recently tweeted.

Earlier in the day, Lauren was spotted shopping on 3rd Street with a gal pal after stopping by her friend Haylie Duff‘s book signing in Los Angeles.