Fat Actress Kirstie Alley has vowed to get back into a bikini - after piling on 75 pounds.

The star shed all the weight back in 2007 as a spokeswoman for the Jenny Craig diet club and then appeared on the Oprah Show in a bikini to show off her svelte new figure.

But as she appeared on the Oprah show again this week, she admitted she had put on all the weight back on but insisted she would lose it all again.

She told Oprah she gained back all the weight because of a lack of motivation, adding: “I just said: ‘I’m going to cut myself some slack’. Big mistake.”

Alley admitted she turned her home gym into a dining room, revealing: “I thought: ‘You know what I need? You know what I haven’t had a lot of? I haven’t had a lot of dinner parties and company’.”

The actress, who last February announced she would be developing her own weight-loss brand, added: “In a way, it’s sort of… crazy.

“We’re in the middle of a recession, and I decide, ‘yes, I’m going to create my own business’.

“I’m going to lose 80 pounds. I’m going to be in a bikini again.”