04/06/2009 at 04:00 PM EDT
Kendra Wilkinson is preparing for marriage and independent life – and she's learning some very important life lessons as she goes.
"The first time I mailed something on my own, like a couple of months ago, I didn't put a stamp on it," Wilkinson, 23, tells Celebuzz
of a recent revelation. "My mom, she was like, 'Are you serious? You didn't put a stamp on your mail?' I'm like, 'Dude, I've never been on my own before, how am I supposed to know?' "
Adds the former Girls Next Door
star, who previously lived in the Playboy mansion: "That was the biggest blonde moment of my life. It was a check too. I don't know where it went to!"
And Wilkinson will be doing her learning in front of the cameras. She is working on her own reality show, Kendra
, which she describes as a cross between I Love Lucy
and Jessica Simpson
's former MTV show Newlyweds
"The first couple episodes [show me] adjusting to my new life," she says of living outside the mansion with fiancé Hank Baskett. "Then it goes into the wedding."