You can use images of single pieces of clothing (like products you saw on fast fashion sites), or full outfit photos (for example from an inspiration picture you saw on Instagram!).
Lea & Jojo is a kids clothing brand that specializes in rain wear. They make raincoats from recycled PET with an GOTS certified cotton lining. The clothing is completely produced in China, in certified factories. The suppliers have to carry the GOTS and OEKOTEX certificates to ensure environmentally friendly and fair trade production and to make sure that no toxic and hazardous substances are used. The factories also carry the Bluesign certificate to ensure environmentally friendly and save working conditions.
Lea & Jojo also has a swimwear line now which is made from Econyl. This is nylon made from recycled fishnets out of the ocean. Since this material is made in Italy they also do the rest of their swimwear production in Europe. Of course under fair working conditions.