They're celebrating a major milestone in their relationship.
And Nick Lachey shared a heart-melting tribute to his 'world', his wife Vanessa Lachey, as they celebrated their five year wedding anniversary.
The 42-year-old pop star posted to Twitter on Friday, 'Happy Anniversary to the most amazing wife, mother, and woman I know. I am so thankful for you and US. You're my world. @VanessaLachey.'
So in love: In honour of their five year wedding anniversary on Friday, Vanessa Lachey shared a romantic photo of husband Nick Lachey cradling her in his arms at sunset
His everything: Nick posted a heart-melting tribute to his 'world', wife Vanessa, as they celebrated five years of marriage this weekend
Vanessa did not hold back in expressing her adoration for her husband either, sharing a photo of her with her husband as well.
The image was of Nick cradling Vanessa in his arms as they walked into the ocean at sunset.
10 years of Lovin' 5 years of Marriage 2 Beautiful Babies 1 Crazy Love Happy Anniversary, Baby!,' Vanessa wrote in the caption.
The former Total Request Live host and Nick began dating in 2006 and married in a televised wedding on Necker Island on July 15, 2011.
They have a three-year-old son Camden and one-year-old daughter Brooklyn together.
The couple's five year wedding anniversary occurred the same day Nick performed with 98 Degrees in Tampa, Florida as part of the My2K Tour.
The tour sees the band tour practically non-stop for the next month with O-Town, Ryan Cabrera, and Dream.
Proud wife Vanessa shared a photo of Nick alongside his 98 Degree band mates, which she captioned, 'A #Throwback Summer Tour! Yaaasssss gurl! The fellas still got it! They kicked off their @My2KTour last week!
'All your FAVORITE songs and then some #Throwback surprises! I hope @nicklachey brings home this outfit!'
Vanessa, meanwhile, is poised to become a whole lot busier, with her latest project now in pre-production.
Variety reported that Vanessa has been chosen to star alongside Alyson Hannigan and Megan Hilty in TV Land's upcoming series The First Wives Club.
The romantic comedy series will be based on the 1996 feature film of the same name.
Vanessa is set to play Sasha, a successful chef with a girlfriend she intends to marry.