StickerHut has more than 1k+ stickers.

How to use app:
- Download and open the app
- Tap on sticker pack
- Tap on 'ADD STICKERS'
- Confirm your action
- Open App and go to a chat
- Tap on the Sticker icon
- You will see a new sticker icon at the bottom and can now use this sticker pack

FAQ's:
I add these stickers and use them after sometime it's not available in my WhatsApp.
Ans:
Some phones don't allow this app to run in the background.
Go-to Settings-->Battery-->Battery Optimization and then choose StickerHut then choose "Don't Optimize".