Katy Perry on the over of Marie Claire’s January 2014 Issue – photo: eonline.com

Katy Perry covers this month’s issue of Marie Claire wearing an AQ/AQ M.A.N.I.C Black Cropped Bodice ($106.50).

video posted by Demi Lovato on keek

Demi Lovato posted a new Keek video a couple of days ago wearing a pair of Miu Miu Acetate Round Sunglasses ($365.00). You can get cheaper, similar sunglasses at Nordstrom ($12.00), Urban Outfitters ($16.00) or ASOS ($21.78).

Ariana Grande for Teen Vogue – photo: FSR

Ariana Grande posed for the February issue of Teen Vogue wearing a matching Butterfly Print Cotton Blouse ($395.00) and Butterfly Print Pleated Skirt ($395.00) by RED Valentino with the Kate Spade New York Mirrored Leather Belt ($76.78), Dior Eyes 1 Pink Sunglasses ($347.00), the Jil Sander Helmut Canguro Bag and a pair of Jimmy Choo Ari Pumps ($795.00). You can get the look with American Apparel Blouse ($30.00) & Skirt ($42.00), Betsey Johnson Sunglasses ($34.99) and Aldo Pumps ($38.49).

“Feelin Like Wednesday from the Adams family!” – Becky G on instagram

Becky G posted a new photo on instagram today wearing an Adidas Originals Women’s Flower Trefoil Tee ($23.74).

photo posted by Lil Debbie on instagram

Lil Debbie played a show a few nights ago wearing a Mookee By Yuske Team Kente Tee ($85.00) and Mookee By Yuske Kente Pants ($148.00) with black sneakers–probably Chuck Taylor All Star High Top Sneakers ($49.95) in Black Monochrome.

photo posted by Lexus Amanda on instagram

Lexus Amanda wore a Forever 21 White Kiss “Dressed To Kill” Baseball Tee (sold out) today in an instagram photo. You can get a similar black and white raglan tee from KISS’ merch store ($24.95).

“as if I wasn’t enough of a nerd already, i’m getting glasses.” – Camila Cabello on instagram

Camila Cabello wore a Forever 21 Lover Cropped Sweatshirt ($11.99) today in an instagram photo showing off some new glasses. Her bandmate Dinah Jane Hansen has worn the same top–maybe Camila borrowed it.

photo posted by Rihanna on instagram

Rihanna posted a photo on instagram a couple of weeks ago wearing an Adriana Bikini ($240.00) from Charlie By Matthew Zink.

Ariana Grande arriving at Narita Airport in Japan on December 31, 2013 – photo: ariana-grande.com

Ariana Grande arrived in Japan yesterday wearing a pale gray Topshop Knitted Fluffy Crop Jumper ($60.00), a white/black Nasty Gal Bonjour Bow Blouse ($48.00), black Nasty Gal After The Dance Shorts ($38.00), and black leather Pour La Victoire Portia Platform Pumps ($99.00, patent only).

She carried two bags from Chanel — a pale pink Lambskin Flap Bag with Retro Chanel Clasp ($3,900.00) and a white Vintage Quilted Cotton Logo Print Tote Bag (not pictured, unavailable) — and pulled a Louis Vuitton Suitcase (~$4,000.00) in Damier Ebene Canvas with her Louis Vuitton Keepall Bandouliere 55 Bag ($1,620.00) in Damier Azur Canvas on top.

Foxes at the Moon Nightclub in Las Vegas, NV on December 31, 2013 – photo: PR Photos

Foxes (Louisa Rose Allen) arrived at her New Year’s Eve 2014 concert in Las Vegas last night wearing a Topshop Sequin Split Back Tee in Blue ($96.00) with jeans similar to the American Apparel Stone Wash High-Waist Jeans ($90.00) and heels like the Steve Madden Marlenee Ankle-Strap Sandals ($99.99).