Kelly Rowland showed her final four X Factor girls just what they can expect when they start work on the live shows next month.

The hopefuls contestants were in Miami with the Destinys Child star at the weekend, and were elated to be chosen out of the eight contestants as Rowland’s finalists.

However, thought they wanted to go off and celebrate their triumph, the tough singer had other plans in place and made each of the performers take part in an intensive four hour vocal training session, with acclaimed vocal coach Rob Stevenson.

The expert has previously worked with stars such as Rihanna, Lionel Richie, Justin Timberlake, Taylor Swift, Alicia Keys, Lady Antebellum, 50 Cent, Jennifer Hudson, as well as Kelly herself, and it’s clear that she has big hopes for her female contestants.

A source told The Sun: “They were ready to celebrate but Kelly had other plans. Rob really put them through their paces.”

Check out which girls Kelly took with her to judges houses here and which four she is rumoured to have chosen for the live shows here. Are any of your favourites missing from the list?