Major caveat: the Daily Mail is a bit of a rag, as is US Weekly, so take this with a pinch of salt - here's an excerpt from the Daily Mail article about Kelly and Brandon. It claims to include info from the upcoming US Weekly article about Kelly's relationship with Brandon's kids. (I have no idea how they've got advance notification of the contents of the article).

But the source told Us Weekly that Kelly has already formed a close bond with the children.

The informant said: ‘Kelly is crazy about his kids, and they love her.’

Read more: http://www.dailymail.co.u...years.html#ixzz1pDCWvB30

As I said, the Daily Mail is hardly a paragon of respectable journalism (although not as bad as some of our other tabloids). Given that they clearly haven't been dating long, I wouldn't be a bit surprised if all of this about his kids is completely made up and she hasn't even been introduced to them as his girlfriend yet (I know she's met them before).