''So proud of my baby!'': Zayn Malik tweets joy at LM top of US charts

One Direction's Zayn Malik took to Twitter on Wednesday night to praise his gorgeous girlfriend Perrie after her band, Little Mix, topped the US iTunes chart.

"So proud of my baby !! Download the tune and keep it @ #1 !! :) xx" Zayn tweeted.

The floppy-haired singer then posted a link to the iTunes store so fans knew exactly where to download their album, Salute.

And he wasn't the only One Directioner to praise the girls.

Niall tweeted: "The lovely girls of LittleMixOffic have are at #1 on the iTunes chart, you guys gotta keep it there for the week! It's a great album ! Xx"

What a sweetie!

X Factor creator Simon Cowell was also keen to tweet his congratulations.

"I have just been told that the new little mix album is number one on the us iTunes album chart. That is bloody fantastic. Congratulations," he wrote.

We agree. Go girls!