En 2012, protagonizó junto a Logan Lerman The Perks of Being a Wallflower, película basada en la novela homónima de Stephen Chbosky y fue elegida para interpretar a Illa de Noé, épica bíblica de Darren Aronofsky.
En 2013, lanzó The Bling Ring, película de Sofia Coppola, en la que interpreta a Nicki.
Sua estreia como modelo se deu na campanha outono/inverno de 2009 da grife britânica Burberry, da qual foi garota propaganda. Everyone expects me to do as well as the others, but if I do, it's no big deal, because they did it first.". Bill and Charlie have already left — Bill was Head Boy and Charlie was captain of Quidditch. Fred and George mess around a lot, but they still get really good marks and everyone thinks they're really funny.Explaining himself further, he revealed: 'My name is Rupert Grint. and possible wispy facial hair, a guitar, a bunch of flannel. I could be Ed or I could be me.''Leo Sayer, he came up to me and he said he loved my music,' he recalled. I just, yeah, I play along.'The two previously played on their likeness when flame-haired Rupert starred in his music video for 2011's Lego House.After Potter all I wanted to do was stretch myself... In the humorous clip, the Moonwalkers star first is seen singing the hit song while hanging out on a tour bus and penning the track.