The American actress was seen watching the show, sitting on one of the balconies on the right side of the stage at 3Olympia Theatre on Dame Street in the south city centre on Tuesday night.
Meanwhile, other Wednesday stars joined Ortega for the gig – including Emma Myers who plays Enid Sinclair in the Netflix hit.
Many fans have shared videos of Ortega waving at fans ahead of Roan’s gig at 3Olympia on social media.
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It comes as the 21-year-old actress has been filming the second season of the Netflix hit Wednesday in Ireland as the production kicked off in early May.
The show relocated from Romania to Ireland for the newest season, for which the production kicked off in early May.
This season, Jenna Ortega is set not only to reprise her leading role in the series but also to sit in the producer’s seat.
One of the world’s most famous directors Tim Burton, known for Edward Scissorhands and Beetlejuice, will return as the series director.
Ortega has also recently played Astrid Deetz in the long-awaited Beetlejuice Beetlejuice which premiered on September 6.
In August, she was seen attending Beetlejuice Beetlejuice premieres around the world, including London and at the Venice International Film Festival.
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The star-studded cast reprising their roles in the Beetlejuice sequel, also directed by Tim Burton, includes Michael Keaton, Alec Baldwin, Catherine O’Hara, Winona Ryder and Monica Belucci.
Meanwhile, other Wednesday stars have also been seen out and about in the Dublin area, such as the Reservoir Dogs star Steve Buscemi who is joining the series’ cast this season.
He is set to make his debut as Barry Dort, the new principal of Nevermore Academy.
On August 31, the 66-year-old actor, best known for his roles in movies such as Armageddon and The Big Lebowski, was spotted eating out at Bubba’s Fish Market in the south Dublin town.
He later intervened after a fight that started outside The Dalkey Duck pub in Dalkey.
Wednesday is the most popular English TV series on Netflix, amassing 252.10 million views of season one. The series has spent 20 weeks on the global top 10 and the top 10 in 93 countries.
