Her account, @TheRealXtina, has been verified and reality star Kim Kardashian helped draw attention to her account by tweeting: 'OMG I'm so excited Christina Aguilera just joined Twitter!!! Please give a warm Twitter welcome to my girl @TheRealXtina FOLLOW HER! Xo'
Christina first wrote: 'Here goes my first Tweet! Brace yourselves… So excited to connect with all my fans here. xo - Xtina.
'Thanks for the welcome to Twitter. I'm getting the hang of this. Never thought I'd say the word 'hashtag'. Pandora's box has been opened.'
Aguilera, who just divorced husband Jordan Bratman, was recently arrested for public intoxication with new boyfriend, Matthew Rutler.
Although, looking beyond those problems, Aguilera is set to be a judge on the upcoming NBC singing competition, The Voice, joining stars such as Adam Levine and Cee Lo Green on the new show.