There is more than one artist with this name:
1) Shelly is a lo-fi dream pop band. It consists of singer-songwriters Clairo, Claud and their friends Josh Mehling and Noa Frances Getzug.
2) Shelly is a female singer from Indonesia.
She's cover Opick's song Bila Waktu T'lah Berakhir in the album Senandung Ramadhan.
3) Shelly is a lofi pop-rock band from Michigan, USA. For fans of The Shins, Empire! Empire! (i was a lonely estate), Alex G.
4. Shelly is a punk band from Brooklyn, formerly known as Scout.