This is a simple wallpaper but it's cute :3. It's Stocking from Panty & Stocking with Garterbelt. The anime isn't safe but this fanart wallpaper is ;P The link for the much bigger version is here ---->
link
Also, I'd recommend using either zerochan.net or konachan.COM (konachan.COM has Safe Mode while konachan.NET has Explicit Mode) for looking for wallpapers. Deviantart.com is good too. konachan.com is very hard to navigate in the beginning at least because the Search thing is really weird.
If you make an account on zerochan.net you can also do some really cool filtering. Like okay you don't want anything mature right? Well, there's a thing where can add tags of things you DON'T want to pop up in your search so you'd put things like "Ecchi" or "Hentai" and it'll filter those out for you. You can also add Favorite Tags so instead of having to type something in over and over again your Favorite Tags appear on the homepage and you can just click those.
Zerochan.net combines your Favorite Tags and your Disliked Tags when searching so you can search for "Wallpaper" and your Favorite Tags will come up most often and no Ecchi/mature content will ever come up since those tags are disliked. Pretty nifty ;D I used it to filter out Yaoi and annoying Final Fantasy characters and it's awesome. You can filter out Mature stuff on Deviantart too but you can't filter out specific things you don't like, like you can on Zerochan.net