She had reportedly got engaged to her Singapore-based, Indonesia-born boyfriend in Taiwan on Jan 25.

And according to the Taiwanese media, they were supposed to tie the knot in June.

So it was a surprise when news broke that Taiwanese beauty Vivian Hsu married her 36-year-old businessman boyfriend Sean Lee in a low-key wedding at a hotel in Singapore on Wednesday.

Veteran Hong Kong actor Simon Yam, 58, revealed he was one of the wedding guests.

Another source close to Hsu's manager also confirmed the wedding.

Over the phone on Wednesday, Yam told The New Paper: "The wedding ceremony was a cosy, intimate affair attended only by the couple's close friends and family. Vivian did not want too many people to know about it so it was kept very private. I went there to congratulate her."

The affable Yam, who was also in town to attend a Canon Chinese New Year reunion lunch, added: "Vivian is a big, gorgeous beauty. I'm very happy for her that she got married and I wish her happiness and bliss in her new marriage to a good husband."

It is believed that Mr Lee, the chief executive of Singapore-based marine logistics group Marco Polo Marine, started dating the actress last April after she began filming Sex Agogo, a romantic comedy he invested in.

Hsu, 38, who is known for being extremely low-profile about her love life, has been romantically linked to Taiwanese celebrities Nicky Wu and Van Ness Wu and Japanese rock star Sugizo in the past.

Hsu and Mr Lee had dated for just seven months before they were spotted in a Vera Wang bridal boutique in Taiwan last November.

Back then, Hsu confirmed they would get married, and told Taiwanese media that she would "follow tradition and have the engagement first" before having the wedding "soon".

The couple celebrated their engagement two weeks ago with a dinner at a restaurant near Hsu's Taipei home.

Filial, responsible

The engagement party was attended by Mr Lee's parents, close friends and family, and also Hsu's close friend, Taiwanese actress Ruby Lin, 38.

Mr Lee is divorced, with two daughters from his previous marriage, but Hsu has said in past interviews that she "does not mind".

She said: "He is filial like me, loves his family and is very responsible."

Yam declined to divulge more details of the wedding ceremony here, but said: "Vivian mentioned that she will be living in Singapore after her wedding, so hopefully you guys will meet her more often in the future."

Yam, who was in Singapore alone, attended the wedding without his wife, international model Sophia Kao, 46. The busy superstar flew back to Hong Kong Thursday morning.

When asked what wedding gift he gave the newlyweds, Yam said: "I did not give Vivian a present as she already has everything she wants. It's the thought that counts."

Get The New Paper for more stories.