Brad Pitt and Angelina Jolie Gallery iconClick for more picsCelebville romance is a complicated enough issue on its own.

But what's showbiz love like when you've already had one high-profile relationship?

Yup, when the love of your life is no longer...

Who do you opt for next?

In Brad Pitt's case, it was famously Angelina Jolie who stepped into Jennifer Aniston's shoes.

Meanwhile, Jen turned to Vince Vaughn.

When Jude Law and Sadie Frost headed to Splitsville, she set her heart on a younger model of man - by way of Jackson Scott.

On her split from Jude, Sienna Miller went for Rhys Ifans - a less smooth yet friendlier-looking option.

You catch our drift. What we're looking at here is who replaces who in the grand old scheme of celebrity love.

In the world of showbiz, who's The One after The One?

For all the answers have a look through our gallery by clicking on the picture above.