1 of 36
newest lady pal is honored as an “American Hero” at the Fresh Air Fund’s N.Y.C. gala, wearing a loose white tank, black maxi skirt – both by Rag & Bone – and peep-toe heels.
2 of 36
The recently blonde star decides she’s better off red, attending a screening of The Help in L.A. wearing a sleek motorcycle jacket and T-shirt, both by L’Agence, with cropped pants and pointy-toed heels.
3 of 36
She may not be dating Mark Sanchez, but the star is still sporty in her boyfriend blazer, pegged jeans and lace-ups to judge the Vans Custom Culture contest in N.Y.C.
4 of 36
The Shameless star attends a Los Angeles Times screening of the show in a figure-flattering ivory Alberta Ferretti sheath, strappy nude Jimmy Choo heels and a powder-blue clutch.
5 of 36
Rocking her favorite Ferragamo bag with an oversized white button-up and pink platforms, the visits stylist (and BFF) Ken Paves’s salon in West Hollywood.
6 of 36
In an aqua gown fit for a summer wedding party, Bridesmaids’ maid of honor steals the spotlight, adding Gilan Heritage Collection jewels to her look, at the Museum of the Moving Image Gala in Manhattan.
7 of 36
Hollywood’s rising starlet takes a twirl in a twisted plaid dress, nude sandals and plush bun at a viewing of London’s Royal Academy of Arts Summer Exhibition.
8 of 36
Ready to ride in a peak-a-boo peasant Dolce & Gabbana dress with neutral accents, Alessandra continues to flaunt her tan stems off the runway at Victoria’s Secret Bombshell Tour stop in Miami Beach.
9 of 36
The actress flirts with florals in a sophisticated dress with tiered skirt and sheer sleeves on the green carpet of Perrier-Jouët’s 200th Anniversary party in New York City.
10 of 36
This Olivia stakes her claim in a plunging water-color dress and minimal accessories at a New York bash for CoverGirl and LeSportsac’s collection launch.
11 of 36
sparkling burgundy sheath rivals the night sky in Venice, Italy. She finishes off her head-to-toe Gucci look with a coordinated shrug and pumps for a dinner there.
12 of 36
13 of 36
Mad Men’s resident bombshell outfits her famous curves in a super-chic printed shirtdress and contrasting yellow pumps at Los Angeles Times’ Emmy Week Envelope Screening Series in L.A.
14 of 36
The beauty rule-breaker looks by-the-book gorgeous in a lace strapless Dolce & Gabbana gown, sparkling clutch and red lips at the Brazilian Film Festival in Hollywood.
15 of 36
is all buttoned-up in a high-necked black frock and ebony leather boots at the opening night of the World Science Festival in N.Y.C.
16 of 36
The model is right on-trend in her vibrant marine-blue top and tangerine skirt by Prabal Gurung, paired with striking Irene Neuwirth drop earrings, for the Gordon Parks Foundation’s awards dinner in N.Y.C.
17 of 36
Looking good as gold in her Donna Karan tube dress and metallic sandals, the Judy Moody and the Not Bummer Summer star fêtes new PBS series The Kimchi Chronicles in N.Y.C.
18 of 36
The new Upper East Side resident is ready for summer in a sunny dress, espadrille pumps and a chain-strap bag at a Gucci-sponsored screening of La Dolce Vita in N.Y.C.
19 of 36
Keeping things spicy both in and out of the bedroom, the shows some skin in a gold-buttoned scarlet halter Aryn K. dress and nude pumps at an Ab Cuts event in Toronto.
20 of 36
The newly-engaged accessorizes her black and white print dress with a black blazer and black pumps – and, of course, that mega diamond engagement ring! – as she leaves dinner in L.A.
21 of 36
Taking a break from playing fairy godmother, the hits LAX in a fedora, sunglasses, scarf and jeans, all from her line.
22 of 36
The native Australian is back in Brisbane to kick off her Dolce & Gabbana-outfitted “Aphrodite Les Folies” tour, wearing a glittering blue Emilio Pucci sheath and metallic sandals to the launch press conference.
23 of 36
Pirates of the Caribbean: On Stranger Tides’s swashbuckling gets her shop on, wearing a cosmic-print Dolce & Gabbana top and flared jeans to visit a Zara in Madrid.
24 of 36
The actress chooses a demure collared two-tone sleeveless Asos dress and nude Brian Atwood pumps for a screening of her film The Art of Getting By in L.A.
25 of 36
The pairs a printed jumper with a cozy knit cardigan, matte tights and ankle booties, leaving a performance of Flare Path in London.
26 of 36
It’s game, set, match for ex who beats the French Open heat in gray J Brand stovepipes, a burnout tee, silk printed scarf and coordinated accessories.
27 of 36
keeps her cool in a breezy prairie dress, cropped denim jacket and retro-style clogs and thatched sack while out in N.Y.C.
28 of 36
The gets her shop on in layered black tops, form-fitting skinnies and knee-high boots in Notting Hill, London.
29 of 36
is summer-ready in a white, cap-sleeved frock and neutral accessories at the opening party for the Tim Burton exhibit at LACMA.
30 of 36
The face of Bulgari brings high style to Istanbul in a beaded and feathered Chanel Haute Couture frock and metallic Mary Janes during the Istancool arts festival.
31 of 36
Also at the Tim Burton exhibit, Osbourne showcases her “girliest tomboy” aesthetic in a lace-paneled Alice + Olivia by Stacey Bendet minidress, shrunken moto jacket and get-noticed accents.
32 of 36
The puts her own spin on spring’s florals in a curve-hugging Dolce&Gabbana sheath, cropped leather jacket, L’Agence By Sama Eyewear sunnies, Victor Hugo clutch and Lucifer Vir Honestus earrings while strolling in N.Y.C.
33 of 36
Also celebrating Memorial Day in Malibu, Calif., the actress keeps cool in a trendy straw fedora, white sundress and metallic sandals.
34 of 36
The 90210 star shows off her unique summer style at a Memorial Day bash in Southampton, N.Y., wearing leopard-print leggings, layered chains and lace-up booties.
35 of 36
The reality star celebrates beau Scott Disick’s birthday in Las Vegas wearing an ivory three-quarter sleeve Rachel Roy mini with a black clutch and platform pumps.
36 of 36
The actress beats the N.Y.C. heat in high-waisted white trousers, a sleeveless button-up and wedges while en route to her Off-Broadway show, Love, Loss and What I Wore.
Vote on Last Week’s Looks! >