.@ddlovato: #DevonneByDemi is coming soon!!!! Sign up for sneak peeks and special offers here: http://www.bydemi.com 

.@ddlovato: This is why you're my biff..... RT @m_callahan: Couldn't wait to put on my Halloween costume. #soexcited

Demi Lovato at her meet & greet in Hamilton, Canada - October 20th

marissa_callahan: Prolly the coolest thing.... EVER. Just my face on one big ass screen

Demi Lovato at the FirstOntario Centre in Hamilton, Canada - October 20th #DEMIWORLDTOUR

Photo: @ddlovato takes a selfie for us before her show in Hamilton tonight

a carinha toda suadinha sem maquiagem é maravilhoso te ver assim #MTVHomecoming

therealashley_simpson: Me and Demi's AMAZING hair flip!!!!!! #demiworldtour #VevoCertified

Demi Lovato took a picture of a fan who purchased a "This Helps" necklace and sent it to Wilmer. It's for charity.

Demi Lovato signed a fans shirt at meet and greet today. #DemiWorldTour

tonystarkradio: This just happened!!! #celebrityheadlocks @ddlovato #montreal.

Demi at her M&G in Montreal, Canada!

Demi at her M&G in Montreal, Canada!

Demi at her Tampax M&G in Montreal, Canada!

Demi Lovato on stage at the Bell Centre in Montreal, Canada #DEMIWORLDTOUR

molly_texeira: Montreal you were so loud the arena was shaking, this is insane. #demiworldtour

Ônibus da #DEMIWORLDTOUR

.@ddlovato: Loving the @Tampax Radiant Collection for encouraging girls to #WearWhatYouWant! #BeRadiant always #spon

Demi Lovato meet and greet in Uncasville, Connecticut - October 17th #DemiWorldTour

Demi Lovato, her team, and family at Lorraine Warren;s house - October 16th

Check out my hair extensions! Whaaaaatt!?! http://www.getsecretcolor.com