Slang for making someone or something look better (especially in photos) — to 'beautify' or 'make look flattering' using makeup, angle, filters, etc.
このフィルターなら盛れるよ。顔色がよく見える。
You can look better with this filter. Your complexion will look nicer.
盛れる角度を見つけるまで写真を何枚も撮った。
I took many photos until I found an angle that made me look good.
友だちに盛れるアプリを教えてもらった。
A friend told me about an app that makes you look better in photos.
最近は盛れるメイクが流行っている。
Makeup styles that make you look better in photos are popular these days.