A source commented that the special will promise to be one of the most exciting episodes yet, saying: "Those who have been chosen to go to Marbella can't wait. The girls have pledged it will be the sexiest TOWIE ever, with lots of bikinis and bare flesh on show.
"There will be a lot of boozy partying and cameras will follow them 24/7 for a week."
The Only Way Is Essex returned for a fifth series earlier this month (April 15).
Watch the Only Way is Essex cast talk about Marbella trips to Digital Spy below: