MoreCosmetics

Press M to open the MoreCosmetcs UI. You can change the key in the settings.

Download the Installer for Vanilla Clients.
You need Java to run the Installer.

Download

Forge

1.8.9 / 1.16.5 / 1.18
1.19 / 1.19.3 / 1.19.4
1.20 / 1.20.2+/ 1.21

Fabric

1.16.5 / 1.17 / 1.18
1.19 / 1.19.3 / 1.19.4
1.20 / 1.20.2+ / 1.21