Kate Middleton
Kate Middleton will wear a tiara next at a state banquet hosted by the Queen. Pictured: Middleton smiles as they travel in the 1902 State Landau carriage along the Processional Route to Buckingham Palace, in London, on April 29, 2011. Getty Images/Ben Stansall

Kate Middleton is expected to wear a tiara next during a state banquet hosted by the Queen.

The Duchess of Cambridge is still on maternity leave, but she's expected to return to her royal duties in October. According to Caitlyn Hitt, a journalist from Daily Mail, Middleton's next possible engagement is a state banquet hosted by Queen Elizabeth II.

The publication noted that Middleton has not confirmed her attendance for the state dinner yet, but she is expected to wear a tiara if she does. Prince William's wife previously wore a headpiece when she attended the state dinner with the Princess Diana's Cambridge Lover's Knot tiara. In another event, Middleton sported the Lotus Flower tiara that belonged to the Queen Mother.

The last time Middleton was seen wearing a tiara was in December 2017 when she attended the annual winter party at Buckingham Palace where she opted for the Cambridge Lover's Knot headpiece again.

Middleton's lengthy maternity leave is expected to end in the last quarter of the year. According to royal biographer Duncan Larcombe, new royal moms take a break from their royal duties for months, but may show up in events deemed to be a family affair.

"It is traditional for new royal mums to take a six-month break from official engagements," Larcombe told Harper's Bazaar. "The wedding doesn't count because it was a 'family affair' but other than that, she will pick and choose her engagements. If she wanted, Kate could disappear into the background until October!"

Prince William and Middleton's next event is Prince Louis' christening. The Duke and Duchess of Cambridge announced earlier that it was set on July 9 at The Chapel Royal, St. James's Palace in London.

The royal couple chose the same venue where Meghan Markle was baptized. They also opted to have the Archbishop of Canterbury the Most Reverend Justin Welby conduct the service. Welby officiated the Duke and Duchess of Sussex's royal wedding.

Prince William and Middleton are expected to make a compromise for the said event. The Duke and Duchess of Cambridge are expected to share photos but will still make the occasion a private affair.