TikTok is a short video platform that allows users to create and share videos with filters, music, and effects. It has become popular worldwide due to its short length, easy-to-understand content, and humorous content.

Amazon is an e-commerce platform that sells various products, including clothing, electronics, books, toys, etc. Amazon has a huge inventory of products, and users can browse and purchase them directly from the website.

If you want to buy leggings on TikTok, you can follow some steps:

1. Open TikTok on your phone or tablet.
2. Search for "leggings" or "leggings trend" in the search bar at the top of the screen.
3. You will see a list of trending leggings videos.
4. Watch the videos and find the one you like.
5. Click on the video to watch it.
6. If you are interested in buying the leggings, click on the "Buy Now" button at the bottom of the video.
7. You will be redirected to the Amazon website where you can add the leggings to your cart and complete the purchase.

Note: Make sure to check the seller's ratings and reviews before making a purchase to ensure a good experience.