photo posted by Melanie Martinez on instagram

Melanie Martinez rehearsed with a band for her show this weekend at Rockwood Music Hall in New York City wearing a black Sleeveless Lace Chiffon Dress ($60.00) from American Apparel, which has a sheer lace top and chiffon skirt.

photo posted by Ash Costello on instagram

Ash Costello’s “Fuck You You Fucking Fuck” t-shirt is inspired by the one that Lisbeth Salander wears in The Girl With The Dragon Tattoo. You can buy one like it on Amazon ($13.95). You can get spiked denim cutoff shorts like hers at Forever 21 or Urban Outfitters ($29.99). Ash bought her mock suspender tights on eBay (around $6.00 to $12.00).

photo posted by Ariana Grande on Instagram

Last week, Ariana Grande posted a picture wearing the Cry Baby Crop Top from Nasty Gal ($30.00).

Zendaya arriving at Dancing With The Stars practice – photo by: justjared

Zendaya Coleman greets the paparazzi wearing a Spread Shirt Overdosed on Confidence Sweatshirt ($31.40), black leggings similar to these from So Low  ($60.20), a Louis Vuitton Luggage (not available online) and a pair of Decade OG Zebre Shoes by Adidas ($95.00)

Demi Lovato live at Holders House in St. James Barbados on April 15, 2013 – photo: dlovato-news

Demi Lovato played a concert in Barbados wearing the Topshop Black Floral One Piece Swimsuit ($64.00) as a top. We think Demi’s exact disco pants are from American Apparel ($85.00); but you can find very similar pairs at Topshop ($60.00), ASOS ($49.88), Karmaloop ($55.00), or Dorothy Perkins ($55.00).

“#Hoodie on straight rockin'” – Cassie on twitter

Cassie wears the Creme De La Creme Hoodie Sweatshirt ($85.00) from Invisible Bully. You can buy similar hoodies in more colors from Spreadshirt ($45.90).

Carly Rae Jepsen at a Meet & Greet in Baltimore April 8th, 2013 – photo: carlyjepsenbrasil.com

Carly Rae Jepsen met fans last week in Baltimore wearing a matching Topshop Square Print Fluid Blazer and Topshop Fuzzy Square Print Trousers, which are both now sold out, but the cream version of the blazer is still available at Topshop ($110.00). You can get the look with an ASOS Blazer In Ponte Check ($83.13) and a pair of ASOS Trousers In Ponte Check ($58.19). You can get a similar cropped black tee at American Apparel ($30.00).

Miley Cyrus in Beverly Hills – photo by: mileyhq

Miley Cyrus was spotted on the streets of Beverly Hills after a photo shoot. She wore a Striped Cotton Spandex Jersey Bra Bodysuit from American Apparel ($50.00) teamed with a Vintage Levi’s Shorts ($39.99) and a pair of Chanel Black Creepers (Not available online). You can find similar creepers for £15.00 at New Look or $75.00 at Urban Outfitters.

Little Mix outside of the Capital FM Studios April 15th, 2013 – photo: little-mix.org

Perrie and her bandmates headed to the Capital FM studios today. Perrie wore her UNIF Cake Sweater ($138.00), which she also wore last month, a pair of Black Jeans ($76.00), and her Topshop Molly T-Bar Geek Shoes ($70.00).

Hayley Williams arriving at the MTV Movie Awards on April 14, 2013 – Featureflash / Shutterstock.com

Hayley Williams walked the red carpet at the MTV Movie Awards tonight in a black and white striped crop top and black overalls. She wears a Topshop Varigated Long Sleeve Crop Top ($28.00), Zara Jumpsuit with Braces at the Back ($79.90), Topshop AJ Cut Out Heavy Ankle Boots ($180.00, sold out), and carried a Jeremy Scott Underpants Clutch ($424.00, sold out). You can get similar cutout boots from Jeffrey Campbell ($184.00)