Kim Kardashian Reveals She Was 20 Pounds Thinner in 2009

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Kim Kardashian offers photographic proof.

Weren't we all a couple pounds thinner five years ago?

Kim posted a throwback Thursday Instagram post on Jan. 15, clearly lamenting the good old days and calling attention to her thinner frame.

"Since it's award season I will do my #TBT to the time Kourtney and I went to the Emmys," she wrote. "She was pregnant and I was about 15 to 20 pounds thinner."

PHOTOS: Best Celeb Throwback Thursday Pics

Let's take a closer look at Kim's 2009 Emmys look. Kim, then 28, made a statement in a one-shoulder white Ina Soltani dress, accessorizing with giant hoop earrings and of course, sported her signature tan.

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Compare that picture with this recent pic of her wearing a cropped tube top at a Paper magazine party on Dec. 4, and she does appear to have a noticeably more voluptuous figure these days.

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Though who says that's a bad thing?

Kim has talked about her weight gain before. In an interview with ELLE UK, she revealed her eyebrow-raising theory last month about why she gained such a significant amount of weight while pregnant with her now one-year-old daughter North West.

"I'd think God was doing this for a reason," she said. "He was saying: 'Kim, you think you're so hot, but look what I can do to you.'"

"My body just went crazy," she added. "After five months I swore I'd never get pregnant again. I got so huge and it felt like someone had taken over my body."

NEWS: Kim Kardashian Says Her Pregnancy Weight Gain Was God's Way of Punishing Her

But Kim wasn't always the super-conscious reality superstar she is today.

Check out this amazing footage ET has of a carefree, teenage Kim at her eighth grade graduation, where she hilariously predicted her future in the spotlight.