Demi Lovato at her book signing at Barnes & Noble November 23rd, 2013 – photo: AKM-GSI

Demi Lovato signed copies of her new book for fans yesterday at Barnes & Noble. She wore a Smythe Peaked Lapel Tuxedo Blazer ($595.00), the 815 Velvet Super Skinny Jeans ($276.48) from J Brand, an American Apparel Stretch Floral Lace Long Sleeve Thong Bodysuit ($44.00) underneath a black tee and her Saint Laurent Classic Janis Pumps ($775.00). Get similar jeans from White Black House Market ($49.99) or Flannels (£65.00) and similar shoes from 6pm ($64.99).

Zendaya live at The Woodlands Pavilion outside Houston, TX on November 10, 2013 – photo: Radio Disney

Zendaya wore a Hologram City White Mesh Sleeveless Muscle Hoodie ($68.00), PRSVR Black Leather Hoopin Shorts ($275.00), and Givenchy Black & White Leather High-Top Sneakers (sold out) at a concert in Texas.

Becky G and Miley Cyrus have both worn the same top.

Little Mix leaving the Riverside Studios in London November 22, 2013 – photo: Daily Mail

Jade Thirwall was spotted leaving the Riverside Studios with her bandmates wearing the Cherry Print Shirt by Meadham Kirchhoff (£50.00) and a Textured Pocket Skater Skirt ($60.00) over the Pleated Lace Star Skirt by Meadham Kirchhoff (Sold out), all from Topshop. She teamed the look with a pair of Kurt Geiger Ellen Shoes ($300.00). You can find similar shoes for $29.80 at Forever 21.

Fifth Harmony on VH1’s Big Morning Buzz Live October 23rd, 2013 – photo: fifth-hamony.org

Ally Brooke posed on the set of VH1’s Big Morning Buzz Live last month with her bandmates wearing a Topshop Cable Turtle Neck Bodycon Dress ($90.00).

photo posted by Ellie Goulding on instagram

Ellie Goulding wore a Local Heroes Cute As Fuck Beanie ($24.00) a few weeks ago in an instagram photo.

Fifth Harmony on VH1’s Big Morning Buzz Live October 23rd, 2013 – photo: fifth-hamony.org

Camila Cabello performed on the VH1 Big Morning Buzz Live last month with her bandmates wearing a Petites High Neck Beaded Top ($80.00) from Miss Selfridge, a Topshop Black Ribbed Hip Skater Skirt ($56.00) and her Jeffrey Campbell Lita Suede Booties ($159.95).

“Loved the dress by @AidanMattox that I wore tonight on @JayLeno!” – instagram

Cassadee Pope stopped by The Tonight Show with Jay Leno on Friday night to perform her single “Wasting All These Tears.” She wore an All Over Beaded Shift Dresses by Aidan Mattox in Purple ($275.00).

VIDEO: Cassadee Pope live on Jay Leno

“Fun with Dr Woo” – Ellie Goulding on instagram

Ellie Goulding posted an instagram picture from a tattoo parlor today wearing an Obey Girls ’89 Black Throwback Crew Neck Sweatshirt ($44.95), also at Urban Outfitters ($49.00).

photo posted by Ashanti on instagram

Ashanti wore a Basic Dyme Crewneck Sweatshirt ($60.00) and Basic Dyme Sweatpants ($60.00) from Dymes Apparel with Nike Air Jordan 4 Retro Sneakers in Fire Red (sold out) in an instagram photo.

Jessie J on the set of X-Factor UK on November 24, 2013 – photo: instagram

Jessie J posted a pic from behind the scenes of X-Factor with Mary J Blige wearing a Stella McCartney Zebra Printed Cotton Jersey T-Shirt ($330.00), also available at Far Fetch and Lane Crawford. Get the look for less with zebra striped t-shirts from Jones New York ($39.00), Bon-Ton ($8.99), Mango ($44.99), or Dorothy Perkins ($17.00).