Nick Lachey reunites with boyband 98 Degrees as they lead red carpet arrivals ...

They're the '90s boyband consisting of brothers Nick and Drew Lachey, Justin Jeffre and Jeff Timmons. 

And reuniting once again, 98 Degrees were seen rehearsing ahead of their performance at the 2018 Miss USA in Louisiana on Monday. 

Gracing the red carpet, the former heartthrobs all looked dapper as they suited up. 

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Band's back! Reuniting once again, 98 Degrees were seen rehearsing ahead of their performance at the 2018 Miss USA in Louisiana on Monday (Pictured L-R: Jeff Timmons, Drew Lachey, Nick Lachey and Justin Jeffre

Band's back! Reuniting once again, 98 Degrees were seen rehearsing ahead of their performance at the 2018 Miss USA in Louisiana on Monday (Pictured L-R: Jeff Timmons, Drew Lachey, Nick Lachey and Justin Jeffre

The boys were all seen dressed in black ahead of their performance. 

Jeff opted for a turtle-neck top while the other members wore shirts underneath their suits. 

Taking to Instagram, Nick shared a photo of himself ready to get the show underway. 

How they've changed! The boys were all seen dressed in black ahead of their performance

How they've changed! The boys were all seen dressed in black ahead of their performance

Stylish: Jeff (right) opted for a turtle-neck top while the other members wore shirts underneath their suits

Stylish: Jeff (right) opted for a turtle-neck top while the other members wore shirts underneath their suits

'@missusa let's do this! Who do you think will take the [sic] crown?,' he captioned. 

And Nick wasn't the only one giving fans behind-the-scenes access, with the group also keeping followers up to date on what's to come.

Going through sound check, it was

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