'O' dear Lindsay Lohan fans realise that they’ve been pronouncing her Irish surname wrong all along

Lindsay Lohan fans have realised that they’ve been pronouncing her Irish surname all wrong.

Taking to TikTok the actress shared her first video leaving fans shocked by the way she said her surname.

"Hey everyone, it's Lindsay Lohan, and guess what? Now I'm on TikTok," she said in the clip.

She captioned the post “I'm on Tiktok Now! #imontiktoknow."

While many Americans have been emphasising the ‘a’ in her name, it is in fact the ‘o’ that is emphasised.

"Have I been pronouncing your name wrong my entire life? I thought it was LoHAAAN," one person commented on her post.

Another added: "Wait. Lindsey 'LOWEN'?!? I'VE BEEN SAYING IT WRONG MY WHOLE LIFE?!?"

One user even apologised for their lifelong mistake: "I’m sorry I've said your name wrong my entire life."

The actress has Irish ancestry on both sides of her family - which is not a surprise given her famous auburn locks.

Lindsay’s father Michael Lohan, who was reportedly born in Galway, has both Irish and Italian ancestry.

Meanwhile, her mother Dina was born to Ann and John L. Sullivan, the latter of whom was born to an Irish catholic family in Co Cork.

The surname Lohan, which originated in Co Westmeath is a Celtic name which means ‘good light’.

It is derived from the Gaelic name “O’Leoghain.”

Born and raised in New York City, Lindsay starred in some of the most iconic teen films of the noughties such as Confessions of a Teenage Drama Queen, Freaky Friday and Life Size.

Most notably she starred as Cady Heron in the 2003 cult classic Mean Girls.

She recently began filming a festive Netflix movie, Falling for Christmas, is set to be released later this year.

In November 2021, the 35-year-old announced her engagement to her partner of three years Bader Shammas.