Credit: Jon Kopaloff/FilmMagic

The incredibly shrinking Ricki Lake!

Although the actress and former talk show host, 42, famously won her battle of the bulge four years ago (dropping over 100 lbs!) Lake can't help but drop more poundage as she rehearses for Dancing with the the Stars with pro partner Derek Hough.

"Every time I show up for work, I'm like 'I got smaller,' but I have haven't weighed myself" Lake told Us Weekly at Variety's 3rd Annual Power of Women lunch in L.A. Friday.

Lake says she's "kicking" herself for not keeping tabs on her weight. "'s more about losing inches anyway. I'm losing a lot of weight"

The hard evidence? "Oh my God, I put on my jeans--my size six jeans," Lake boasted, "They were too tight to put on a month ago, and they're now falling off. So, that doesn't lie!"

Last month, Lake said she wanted to drop the 15 pounds she's gained over the past year -- "I fell in love!" she explained.

The lucky guy beau Christian Evans, who proposed over the summer during a vacation in Spain.

Lake wouldn't reveal her wedding date, but teased that the wedding day will be "in the spring. I'm so excited! We picked a location, we hired a photographer."

It will be the second marriage for Lake, who divorced Rob Sussman in 2003 after nine years together; the exes share sons Milo, 14, and Owen, 9.

"I [didn't have] a wedding when I was married the first time," Lake explained. "I got married in Vegas, but this time it feels like this time is the one forever and ever -- and I want it to be very special."