I need an app which can NOTIFY me when there's new article about celebrity?

IIm looking for iPhone app which can notify me when there's new article or info posted about certain celebrity. I know there's some app like this because other fan pages use it. I've seen an app like for other artists like Rihanna or Bieber but I have a source about Nicki Minaj. I would really appreciate if someone helps me out.

Google Alerts can do that. You can create an alert for anything and get it sent to you in real time. Alerts.google.com.

Use the news app on iphone and just choose celebrity sources for it.

You need a life