This year when most celebrity marriages, from Ben Affleck and Jennifer Garner to Gwen Stefani and Gavin Rossdale are breaking-up, there is one celebrity marriage that is still going strong since last nine years.

Nicole Kidman and country singer Keith Urban are determined to make their marriage work at any cost. "It's our priority, you know?" Urban told ET Online in a recent interview. "It's what we love to do more than anything in the world."

Kidman, 48, tied knot with Urban, 47, in 2006 and have two children -- Faith Margaret Kidman Urban and Sunday Rose Kidman Urban. Apart from trying their level best to keep their marriage intact, the couple is also reportedly trying hard to maintain their youthful looks. There is speculation in the media that the two are using botox injections to retain their youth.

OK! Magazine reported that the couple is trying Botox injections and fillers to maintain their young looks. According to the magazine's sources, the Oscar winning actress is responsible for introducing her singer husband to the world of cosmetic procedures so he can maintain his younger looks.

"He is getting Radiesse fillers, because he's determined to keep that baby face his female fans love," the magazine's sources say. It also adds that the “Grace of Monaco” actress is so hooked on the injections that she can “barely move her face.”

However, neither Kidman, nor Urban confirmed these reports.

In her previous interview with a German magazine (via Starpulse), Kidman accepted that she tried Botox in 2011 but feels that nothing works better than working out and a good diet. She even added that she did not like the after effects of using Botox.

“I even tried Botox but I didn’t like how my face looked afterwards. Now I don’t use it anymore - and I can move my forehead again,” the actress said.