HEADED FOR NZ: Prince George and his parents the Duke and Duchess of Cambridge.

Prince George is heading to New Zealand with his parents in tow, and the gossip magazines say Wills and Kate may use the trip to make another little royal.

Last week palace officials confirmed the heir to the throne will be accompanying the Duke and Duchess of Cambridge on their 10-day tour of New Zealand next month.

There was little doubt among the gossip mags that Prince George, whose activities will include a play date with 10 Plunket babies at Government House, would "steal the show".

But while George basks in the spotlight, Kate and Wills could well be nipping off for some more private activities at a Queenstown hotel, the Women's Weekly speculated.

Sources close to the palace say his parents may be planning on using the trip as a "second honeymoon" of sorts, and are thinking about trying for a second baby while they're here.

Prince William has quipped he might do "a Beckham" and name any resulting child after the place it was conceived.

"They have made no secret they'd like three children and don't see any point in waiting," the source said.

Meanwhile the Queen is loaning her own personal stylist, Angela Kelly, to the duchess for the tour, Woman's Day reported.

"This tour is being seen as the most important step of Kate's royal transformation so far and she'll be photographed more than ever before," a palace source said.

"It's incredibly important that she looks just right and the Queen has been instrumental in helping her."

The duchess was expected to stick to "lower hemlines than she usually favours" to avoid incidents such as that at Calgary

International Airport in Canada in 2011, when a gust of wind caught her short yellow dress and flashed her underwear to the world.

"The Queen believes it's unseemly for Kate to show her knees, so she's requested longer skirts and dresses with not too much decolletage or bare arms on show," an insider said.

Royal fashion enthusiasts could expect up to four outfit-changes a day, with Catherine likely to showcase local designers such as Trelise Cooper, World and Collete Dinnigan.

Catherine is already a fan of New Zealand-born, London-based designer Emilia Wickstead, and was likely to showcase her designs, Woman's Day reported.

New Idea shared details of former That '70s Show co-stars Mila Kunis and Ashton Kutcher's reported engagement.

Kunis has been spotted wearing a round, six-carat sparkler on her "all-important ring finger" for the past two weeks, but now sources have confirmed the pair are heading for the altar.

They say Kutcher popped the question in a "very sincere, simple way" after being held up by divorce proceedings with first wife, Demi Moore.

After divorcing in 2012, the former couple squabbled over a reported $357 million fortune, and the settlement was only finalised in November.

With that expensive chip on his shoulder, Kutcher is said to have already hinted at his desire for a prenup agreement with Kunis.

"Mila absolutely does not want one, because she thinks it's bad luck," a source said.