Chrissy Teigen has dyed her hair brunette.

The 29-year-old model took to her Instagram account yesterday (25.02.15) to show off her new tresses after ditching her luscious blonde locks for a dark chocolate shade.

Alongside a photograph of herself in the beauty salon with dye over her hair, she teased: ''LOOK WHAT IS HAPPENING.''

She then shared another snap of the back of her head as she prepared for a photoshoot and accompanied it with the caption: ''Hola from set! @sjblife @davidlopezzz @joshrotten (sic).''

Chrissy is currently in Mexico on a modelling job but has recently been supporting her husband John Legend, 36, as he picks up a number of awards for his new track 'Glory' from the movie 'Selma'.

Meanwhile, the couple, who tied the knot in Italy last year, may be extremely focused on their blossoming careers but that hasn't stopped them trying for a baby and they believe it'll only be a matter of time before the model falls pregnant with their first child.

The 'All of Me' hitmaker said last month: ''We want to have kids, so it's just a matter of time. Whenever it happens, we'll be excited.''

He added: ''We want each other to be happy, and part of that is being fulfilled in our work and loving what we do.''