Rene Zellweger
Renee Zellweger waves at the 21st annual Elle Women in Hollywood Awards in Los Angeles, California 20 October, 2014Reuters

American actress/producer Renée Zellweger has responded to reports that she looks different.

The 45-year-old Academy Award winner's appearance sparked a lot of speculation as she attended Elle's 21st annual Women In Hollywood Awards in California on 20 October, with many saying that she must have had plastic surgery.

"I'm glad folks think I look different! I'm living a different, happy, more fulfilling life, and I'm thrilled that perhaps it shows," Zellweger told People.

Though the Jerry Maguire actress feels the situation is "silly" she decided to comment on the issue because "it seems the folks who come digging around for some nefarious truth which doesn't exist won't get off my porch until I answer the door."

"My friends say that I look peaceful. I am healthy," Zellweger added. "For a long time I wasn't doing such a good job with that. I took on a schedule that is not realistically sustainable and didn't allow for taking care of myself. Rather than stopping to recalibrate, I kept running until I was depleted and made bad choices about how to conceal the exhaustion. I was aware of the chaos and finally chose different things."

She revealed that she's now focusing on health and happiness.

"I did work that allows for being still, making a home, loving someone, learning new things, growing as a creative person and finally growing into myself.

"People don't know me [as] healthy for a while. Perhaps I look different. Who doesn't as they get older?! Ha. But I am different. I'm happy," Zellweger said.

Here's a selection of Zellweger's looks over the years.

Renee Zellweger
Renee Zellweger is known for her roles in Jerry Maguire and Bridget JonesGetty
Rene Zellweger
Renee Zellweger attends the 2000 VH1/Vogue Fashion Awards at Madison Square Gardens 20 October, 2000 in New YorkGetty
Rene Zellweger
Renee Zellweger holds her Oscar statue backstage at the 76th annual Academy Awards in Hollywood, California 29 February, 2004. Zellweger won the Academy Award for best supporting actress for her role in Cold MountainReuters
Rene Zellweger
Renee Zellweger arrives at the 77th annual Academy Awards in Hollywood 27 February, 2005Reuters
Rene Zellweger
Renee Zellweger attends the 29th Annual Fashion Group International Night Of Stars at Cipriani Wall Street on 25 October, 2012 in New York CityGetty
Rene Zellweger
Renee Zellweger attends Giorgio Armani One Night Only NYC at SuperPier on 24 October 24, 2013 in New York CityGetty