frippery

Short definition from Wiktionary

Noun

1. 1
   Ostentation, as in fancy clothing.
2. 2
   Useless things; trifles.
3. 3
   Cast-off clothes.
4. 4
   The trade or traffic in old clothes.
5. 5
   The place where old clothes are sold.
6. 6
   Hence: secondhand finery; cheap and tawdry decoration; affected elegance.