Summer has officially begun and fourth of July weekend usually brings the season into full swing. With the rising temperatures, no one wants to spend hours by a hot curling iron or hairdryer, nor do they want to apply layers of thick makeup that will only melt into a hot mess in mere minutes while out in the sun.

So, to enjoy your summer barbeques and pool parties with ease, let everyone's most trusted beauty guru's -- celebrities-- guide you as to what products will leave you flawless.

*Jennifer Aniston trusts Frederic Fekkai Summer Hair SunShine Shield Spray in keeping her famous mane free from sun damage and heat. The product is fragrance-free and also protects strands from salt-water and chlorine, and will keep colored hair from fading. The perfect product to throw in your tote as your headed to the beach, and it's super light, so it won't weigh your hair down.

*Beyoncé updates her beauty regimen by slicking on Chanel's Nail Color in Blue Satin. Her manicure is polished a trendy, but the deep navy shade offers a lighter approach to heavy tones favored in the winter, while still offering the contrast that is popular now.

*NARS Duo in Bellisima is a wonderful alternative to heavy, dark eyeshadows that are better reserved for the after-hours longe scene. Kate Beckinsale favors the shimmering beige and gray brown that will complement any eye color.

*Another NARS fan is one of the Desperate Housewives, Marcia Cross, who holds a Psychology degree from Antioch University. Along with Kirsten Dunst and makeup artist, Pat McGrath, the brand's blush in Orgasm has become a cult favorite. The suggestively titled blush makes any woman look like she just came from a clandestine summer romp. Marcia Cross gushes that the powder blush, "has some shimmer so it gives a healthy flush that's not too heavy."

*Tarte Cheek Stain in Blushing Bride attracts legions of fans, including Ellen Pompeo and Kalamazoo student (for two years) Selma Blair. The deep berry color lightly blushes cheekbones with a flush, and the Sunkissed hue offers bronzing beauty without the skin damage. 

*Tarte's Dual Lip Gloss also is a favorite of the celebrity set, including Ellen Pompeo and the rest of the Grey's Anatomy cast ( well, the women, at least...). The gloss provides two shades for an even bigger bang for your buck, as you can wear each one separately, or combine them for an original smattering of gloss on your pucker. The television star raves, "they're sheer and not sticky. I wear the pink (of duo Lois + Clark) with a smoky eye. The corals look great with brown and gold."

*Speaking of Grey's Anatomy and behind the scene beauty tips, Katherine Heigl lines her lashes with Stila Convertible Eye Color in Berry, which she says, "I have this eye pencil in three different colors. it goes on easy, smudges well, and looks great. I like the fast tricks." And so do we.

*America's Current Sweetheart, Kate Hudson, claims to never, "go anywhere without Stila Sheer Color Tinted Moisturizer: Ryder, passport, wallet, a little bit of cash, and my Stila moisturizer." The base provides SPF protection (essential for this weekend!) while offering a subtle improvement upon tone and texture of your skin.