US musician John Legend and his Chrissy Teigen. Picture: Brian Snyder/Reuters

Chrissy Teigen took to Twitter to confess she panicked when she returned home to find her toilet missing as her and her husband John Legend are having a fancy Japanese toilet installed.

The 'Sports Illustrated' model - who is expecting her second child - rushed home as she was desperate to use the bathroom but was left shocked when she realised it had disappeared.

READ: Chrissy Teigen's jealous daughter

Recalling what happened, she wrote on Twitter:

However, her husband John Legend quickly took to the social media site to explain just why there was no toilet in their home.

He wrote: "I can explain ... We're upgrading our regular toilet to one of those fancy Japanese ones that opens itself and washes your butt. Apparently, our contractor decided there should be a toilet-less transition period. (sic)"

And when one fan asked what they planned to do until the new one was installed, John replied: "We have other bathrooms!"

Meanwhile, Chrissy previously took to Twitter to admit she is struggling to find a name for her and John's unborn baby.

Captioning a picture of a number of unisex baby names, she wrote on Twitter: "Jesus Christ my baby will have no name (sic)"

A source had previously revealed that John and Chrissy are "so excited" that their daughter Luna is going to be a big sister.

They said: "They have been planning for this for a long time. Chrissy is really excited to finally share the news. They are so excited to make Luna a big sister. They think Luna will do a great job with the baby and they're really happy to be expanding their family."