Carrie Symonds' dress for her secret wedding with Boris Johnson cost almost £3,000.
The PM and his third wife tied the knot at Westminster Cathedral yesterday, Downing Street has confirmed.
The mum-of-one opted for a £2,870 embroidered tulle white dress, while Mr Johnson wore a dark suit with a blue tie.
Her wedding dress, by Greek-based luxury designer Christos Costarellos, was handmade, according to reports.
The gown features tiers of wispy ivory tulle spun with silk, with traditional Greek patterns.
It has latticework trims and corded lace appliqués, which the popular atelier is known for.
At the time of writing, the dress -named 'Appliquéd Embroidered Tulle Gown In White' - has sold out on Modesens and Net-A-Porter.
The couple announced their engagement - together with the news that they were expecting their first child - in February last year.
The pair exchanged vows in Westminster Cathedral on Saturday in front of a small group of close friends and family.
Shortly after 1.30pm, the cathedral was suddenly cleared of visitors, with staff saying it was going into lockdown,The Sun reported.
Half an hour later, a limousine carrying the bride swept into the piazza outside the main west door.
This morning, a Downing Street spokesman said: "The Prime Minister and Ms Symonds were married yesterday afternoon in a small ceremony at Westminster Cathedral.
"The couple will celebrate their wedding with family and friends next summer."
It is understood Ms Symonds will take her husband's surname and be known as Carrie Johnson.
Boris Johnson will be returning to the office after the Bank Holiday, according to reports.
He and Carrie Symonds plan to go on their honeymoon in summer 2022.
It is Mr Johnson's third marriage, having finalised his divorce from his second wife Marina Wheeler in 2020.
The ceremony meant Mr Johnson became the first prime minister to marry in office since Lord Liverpool married Mary Chester in 1822.
The wedding comes at the end of a difficult week for the Prime Minister in which his former aide Dominic Cummings branded him unfit for office.
