Minnie Driver, 49, puts on a stunning display in florals as she joins dashing fiancé Addison O'Dea, 40, at LA premiere of new series Avenue 5

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They have been an item since last year. 

And Minnie Driver proved things were stronger than ever with Addison O'Dea as they hit the red carpet for the LA premiere of new HBO series Avenue 5 on Tuesday. 

The British beauty, 49, and the filmmaker, 40, wowed as they sashayed along the red carpet, with Minnie opting for a billowing floral gown - however she was not sporting the eye-popping engagement ring she wore in September. 

Happy days: Minnie Driver proved things were stronger than ever with Addison O'Dea as they hit the red carpet for the LA premiere of new HBO series Avenue 5 on Tuesday

Minnie, who was first rumoured to have sparked up a romance with the filmmaker in February, looked stunning as she stepped out for the party.

She wore her raven locks in loose waves falling from a centre parting and added a pop of colour to the muted look with a slick of red lipstick. 

One accessory Minnie opted to leave at home was the eye-popping diamond she was donning on her ring finger at the Amazon Emmy Awards after-party at Chateau Marmont in Los Angeles in September. 

Avenue 5 is a space-set comedy created by With The Thick of It and Veep genius Armando Iannucci and starring Hugh Laurie and Josh Gad. The show is set to hit Amazon on Sunday and has thus far received mixed reviews. 

A vision: The British beauty, 49, and the filmmaker, 40, wowed as they sashayed along the red carpet, with Minnie opting for a billowing floral gown - however she was not sporting the eye-popping engagement ring she wore in September

Floral fancy: Minnie, who was first rumoured to have sparked up a romance with the filmmaker in February, looked stunning as she stepped out for the party

Starring role: Hugh's casting was first announced in 2018, when it was revealed that he was teaming back up again with Armando for the comedy

The show tells the story of the titular space ship - a luxury space cruiser for guests to travel the solar system however a malfunction causes deaths and knocks the journey off-course and set to run for a further three years.  

Hugh's character Ryan, the ship's captain, and his co-owner, Josh's character attempt to keep the ship calm despite growing unrest. 

Hugh's casting was first announced in 2018, when it was revealed that he was teaming back up again with Armando for the comedy. The program is set in space in future times, with Laurie playing the role of a captain named Ryan Clark.

The Golden Globe-winning actor, best known for playing Dr. Gregory House on the hit series House, worked with Iannucci - who is also an executive producer on the program - on the show Veep, playing U.S. Senator Tom James.

Away from the upcoming show was Minnie's date Addison, who is best known for the documentary Discovery TRVLR.

Stars of the show: Josh Gad, who plays Herman Judd, joined in the fun as he put on a suave display

Happy days: Josh posed with Zach Woods, who stars as Matt Spencer

Here he is! Kyle Bornheimer scooped the role of Doug

The series explores the 'mind-blowing rituals, obscure traditions and life-threatening quests that define a variety of cultures in North America, South America, Asia, Australia, Africa, Antarctica and Europe,' according to a release. 

Wow! The actress sported a huge diamond ring on her wedding finger back in September but went without on Tuesday

In 2018, Minnie was linked to Neville Wakefield, a longtime friend turned beau. In March 2017 Minnie told Ellen DeGeneres, 'I've known him since I was 17, 18?

'He was a really good friend of mine's boyfriend, and he and I became really good friends, and they didn't - it didn't work out, and then he married somebody else, and we had this whole life in between.'

Minnie shares son Henry with producer Timothy J Lea, who worked on Minnie's show The Riches. The couple parted ways before their Henry, nine, was born.

Meanwhile, the Good Will Hunting star was excited to be back on the Will and Grace reboot recently. The actress made six appearances during the original run of the NBC show and makes a guest appearance next week.

Lady in red: Suzy Nakamura looked sensational in a red gown

Pretty in pink: Nikki Amuka-Bird wowed in a pink dress with red lining

The main man! Armando looked smart as he launched his new show 

Stunner: She wore her raven locks in loose waves falling from a centre parting and added a pop of colour to the muted look with a slick of red lipstick

Minnie starred as Karen's (Megan Mullally) nemesis Lorraine Finster. She said of the experience: 'It was like I had left them all in the same place and I came back and found them all in the same place! It was very familiar and amazing.

She told People: 'It was the exact same crew — everyone from hair and makeup to wardrobe. It’s such a family. It was absolutely amazing to be reunited with everyone. It felt like a dream.'

Minnie's character originally appeared in Season 5 in 2003 as the mistress of Karen’s then-husband Stanley Walker.

Karen ended up marrying Lorraine’s father, Lyle, in revenge.

Driver has 10-year-old son Henry with Timothy J. Lea. They were last seen together in November at the Thanksgiving For The Homeless event held at Los Angeles Mission.

Dazzling: She was showing off her ageless complexion at the event