L.A.'s summer is heating up this month and so are the fashions worn at events left and right. If what we've seen in August so far is any indication, we are in store for a whirlwind of wardrobe envy-inspiring looks in the weeks to come. From sexy tuxedo dresses and leather mini-skirts to peplum pantsuits, stars have covered all corners of the style spectrum with their winning outfits for everything from red carpet Hollywood premieres to intimate cocktail soirees. Take a peek at our 15 favorite party looks that got the month of August off to a very strong and stylish start in this edition of Best Dressed Guests.