photo posted by Mariel Loveland on instagram

Mariel Loveland wears a “Pop Punk Not Pills” White on Black T-shirt ($18.00). She writes: “Siq shirt @statechampsny gave me after he broke edge #poppunknotpills”

photo posted by Jessie J on instagram

Jessie J posted a photo today on instagram of her Air Jordan 11 Concord Sneakers ($350.00-$499.99).

“go to perriinkstore.com to buy this hat, tee shirt + tons of other goodies now. @perriinkcartel #verymerryperristuff” – Christina Perri on instagram

Christina Perri wears an American Flag Tee ($30.00) and American Flag Flexfit Hat ($25.00) from PERRI INK. Cartel, her brother Nick’s tattoo and motorcycle shop.

Hayley Williams with Mariel Loveland of Candy Hearts – instagram

Hayley Williams wore a pair of Tripp NYC Jungle Jeans in Tiger Print, available at Sourpuss ($44.00) or Trash and Vaudeville ($68.00), at the Bridge 9 Records SXSW showcase last month where she performed with What’s Eating Gilbert. Kreayshawn has the same pair.

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).