Claires and Icing are really great. Claires is a little for younger girls but there are some versatile items. Icing is more sophisticated and for teens and adults.
icingbyclaires.com or claires.com

Mandee’s has so much! They have so so so many accessories, all of them that you could think of and theyre cheap!
mandee.com

Wet Seal also has so much and for every style. All of the jewelry you see the stars where they have for cheaper prices.
idk the website but you can google it!

American Eagle has very trendy, modern jewelry and sunglasses! very cute. Same with Aeropostale.
ae.com or aeropostale.com

Target and Kohls also have so much, like departments dedicated to it. You can buy in bulk!