Kendra Wilkinson: 'I Feel I Could Look Better'

Jan. 3, 2011— -- Former Playboy Playmate-turned-reality-TV star Kendra Wilkinson has built her career around her voluptuous figure. But the constant focus on her body caused her to struggle with her weight, Wilkinson said.

Her toughest weight battle occurred when she tried to lose the weight she gained, following the birth of her son, Hank Jr., now one year old. The 5'4" mom said she went from 105 pounds to 165 pounds, a dramatic change which was played out on her latest reality show, "Kendra."

"My pregnancy was a free for all," Wilkinson said. "I had no boundaries. I just ate, ate, ate. I just said, 'This is my time, these are my nine months, I can just have fun, how big can I really get?' Sixty pounds! I gained 60 pounds!"

"Primetime: Celebrity Weight Loss -- What Really Happens" is an hour-long special airing on Wednesday, Jan. 5 at 10 p.m. ET.

After giving birth, Wilkinson said she was "shocked" when her money-making body didn't instantly bounce back from the pregnancy.

"I looked in the mirror and I said, 'I'm fat,'" Wilkinson said. "I blew up like a blowfish."

She tried ramping up her daily workout routine in the gym and running outside in the heat while wearing sweats, but Wilkinson said she still couldn't lose the baby weight like other celebrity moms had.

"I didn't lose one pound," she said. "I will admit, I was jealous after giving birth to my baby and I started seeing Kourtney Kardashian losing all that weight really fast."