Several lawmakers said they will take up the issue on Monday when the minister is due to take the oath in parliament to become an ex-officio member in the house.
‘We will urge the minister to comply with Islamic regulations, the customs of society and a law adopted by parliament,’ Islamist MP Abdullah Okash, spokesman for a grouping of six Islamist MPs, told reporters on Sunday.
A number of other Islamist lawmakers also made similar calls.
When MPs passed a law granting women full political rights in May 2005, they attached a precondition requiring women to abide by Islamic Sharia regulations, which have never been detailed.
Sebih, a retired top bureaucrat, became the second woman minister in the oil-rich emirate when she was included in the cabinet line-up announced on March 25.
There was no controversy on Maasuma Al Mubarak, who made history by becoming the first woman minister in Kuwait about two years ago, because she wears a hijab.
Parliament speaker Jassem Al Khorafi however said last that parliament rules do not require Sebih to put on a headcover while she attends sessions.
Islamist and tribal MPs form a majority in Kuwait’s 50-seat parliament.
Kuwait is a conservative religious state but unlike neighbouring Saudi Arabia, there are no restrictions on women’s dress code and they are free to wear the hijab or not.