Singer Solomon faced a furious public backlash after she was photographed with a cigarette while seven months pregnant, but Katona said that she suffered the same treatment when she smoked while expecting her children.
Katona wrote in her OK magazine column: "I got the same stick Stacey got. I smoked during pregnancy, two to three a day. My doctor said, 'If it's stressing you out don't panic, because smoking isn't as harmful as stress'."
The 32-year-old also said: "Let's be honest, Stacey's smoking Silk Cut - it's not even a real cigarette."
Last week, 22-year-old Solomon tearfully apologised for her "selfish" actions on This Morning, saying: "At the end of the day, nothing that I can say makes it right. All I can say is that from the day I found out that I was pregnant, I have tried my best to give up.
"I completely understand why people would be angry, because for some people it's uncomprehendable. I understand that it's a selfish thing to do, so I don't think the comments are unjustified, although I do thing some are a bit harsh."
Supermarket chain Iceland recently announced that it has decided to retain Solomon as its brand ambassador despite the scandal. Katona was previously sacked from Iceland's adverts in 2009 after she was pictured taking cocaine, leading to Solomon being hired.
> Stacey Solomon axed from 'Celebrity Mum of the Year' after smoking row
Watch Stacey Solomon's television apology below: