The beautician featured in both series of the ITV2 hit, but confirmed that she would not appear in its third run earlier this month. The 21-year-old has since entered the Celebrity Big Brother house, in a rumoured £200,000 deal.
Prior to joining the Channel 5 show, an "emotional" Childs joined her former castmates to film a The Only Way Is Essex special.
"It's basically a recap of all the best bits from series one and two - all the funny moments, all the awkward silences," she explained in her New magazine column. "It was also my chance to say goodbye to the show.
"It takes a lot to make me cry but I was in floods! Sam [Faiers] had a little cry with me."
She continued: "I'm still distraught. I'm going to miss it so much. My black So Couture dress seemed very fitting as it's a bit like I'm in mourning!"
On entering the Celebrity Big Brother house, Childs admitted that she was "absolutely petrified" but promised to "to be myself and make sure I have a scream".
Celebrity Big Brother continues tonight at 10pm on Channel 5.
> Amy Childs: 'I'll really miss The Only Way Is Essex'
> Celebrity Big Brother: Amy Childs confused during Darryn Lyons 'real name' chat
Watch Amy Childs encourage Jedward to party with her in Essex: