The 7 Best Beauty Looks of the Week

Seen at: The Guess Spring 2015 Collection Launch in Sydney, Australia on 8/4/15

What: Voluminous ponytail, cat-eye, red lip—they're all components of a classically sexy look, but Gigi keeps it fresh and casual.

Get the look: To strike the same vibe, tousle up your ponytail, choose a tangerine-based lipstick rather than a deep red, and play up a dewy complexion with a slightly shimmery highlighter, like RMS Beauty's Living Luminizer.

Seen at: The Crop Over Festival in Barbados on 8/4/15

What: Not that RiRi ever needs an excuse to go all out, but she did it up for this festival on her native island: Rhinestones (everywhere), shimmery nails, eyes, and skin—and tight, natural curls, which she kept on display even after the party was over.

Get the look: The rules are...there are no rules. Any kind of outdoor summer fest calls for a little bit imagination—and in the case of those jeweled nipple pasties, a dare-devil attitude. (But if you're eyeing that aquatic, shimmery eye, we love Lancome Color Design Infinité 24h cream shadow in Tremendous Turquoise.)

Seen at: The Fantastic Four New York premiere on 8/4/15

What: With cropped hair, eyes and lips are on full display.

Get the look: To avoid overloading hair with product, opt for multitasking Oribe Dry Texturing Spray. This lightweight mist, vetted by hair pros, neutralizes dirt and oil while adding just the right amount of texture and shine.

Seen on: Instagram on 8/4/15

What: Big hair is having a moment. Sampaio kept the rest of her look simple, which is decidedly un-'80s—and key to avoid looking dated.

Get the look: A retro hairstyle calls for retro methods: Invest in some hot rollers to get this look. Seal in the volume and add bouncy hold with some thickening hairspray, like Bumble and bumble's Dryspun Finish.

Seen on: Instagram on 8/4/15

What: A gorgeous girl's night out. The three models look distinctly amazing, but the common thread is perfectly bronzed skin.

Get the look: For a glowing face, a subtly shimmery bronzer adds color and dimension at the same time. We recommend Urban Decay's Naked Skin Bronzing Beauty Balm, which also has built-in SPF. As for the rest of your bod, we have to ask that you choose a sun-safe way to build your tan. St. Tropez Self Tan Bronzing Mousse is the next best thing to the salon.

Seen on: Instagram on 8/6/15

What: Exhibit A of what a tousled lob should look like.

Get the look: If your hair already has some natural bend, scrunch in some sea salt spray like Herbivore Botanicals Texturizing Sea Mist for added texture and definition. Got naturally straight strands? Use a wide-barreled curling iron before spraying.

Seen on: Instagram on 8/6/15

What: Lady Gaga modestly wrote in her caption that she threw together this back-knot sans stylist, but we think she did a pretty fine job.

Get the look: Rake long hair back into a ponytail and twist it into a large bun. Tuck the ends underneath the twist and secure with bobby pins.