To help inspire you, I've found lots of fabulous white pieces for you:
Blank Denim White Bell Bottom Jeans, ShopBop, $75
Anne Klein White Slim Skirt, Zappos, $59
Nine West Braxton Wedge, Endless, $99
Halston Heritage Stretch Knit Dress, Saks Fifth Avenue, $325
Cropped Denim Jacket, Gap, $69.95
Once you're finished at the BBQ's today, take a few minutes to pull the fabulous white pieces out from the back of your closet and start working them into your outfits! Enjoy the rest of your holiday!