Nick Lachey is ready for a second child.

The 40-year-old singer and his wife Vanessa Minnillo, 33 - who got married in 2011 - are already parents to their 18-month-old son Camden, and are now thinking about increasing their brood.

He said: ''We won't wait too much longer. I really want to have a little girl.''

Nick also hopes when they do have a second child, the tiny tot will grow up to share the same temperament as well-behaved Camden.

He added to Us Weekly magazine: ''Cam's got the best temperament ever, we can't imagine having a better kid than we do. He's an angel.''

Meanwhile, Nick has a new job, hosting VH1's 'Big Morning Buzz Live!', and is eager to become healthier, so recently embarked on a juice cleanse to kick-start his weight loss plan.

He wrote on Twitter: ''2014 is the year of getting healthy!! Time to get the diet right and dive into #crossfit Anybody with me? (sic)''.

Nick has also completed a gruelling detox and has already noticed a difference in his body.

He wrote: ''Well, the 5 day juice cleanse is officially over and somehow, i survived!! Thank you @OrchardFlats for cleaning up my 'act'. (sic)''