THEN AND NOW: Here's how the longest celebrity couples evolved over the years

John Legend and Chrissy Teigen met in 2006.Mark Sullivan & Allen Berezovsky / Getty

• There are plenty of celebrity couples that have lasted over 20 years.
• Even today, they look just as happy as ever.
• From Will Smith and Jada Pinkett Smith, who got married in 1997, to David and Victoria Beckham, who wed in 1999, these celebrity couples glow as they grow together.

One of the benefits of a long-term relationship is that you get to grow old together. Long-lasting celebrity couples also do it in the public eye.

Many of these famous couples - from Tim McGraw and Faith Hill to Justin Timberlake and Jessica Biel - have gone through various transformations over their decades-spanning relationships.

From then to now, here's how these long-lasting celebrity couples have grown over time.