Ever since Catherine, Duchess of Cambridge went into labor, all eyes were set outside the hospital waiting for the first sight of the new born prince.

Few hours after Kate Middleton gave birth to her third baby, she accompanied husband Prince William to introduce her new born baby boy to the world. The Duchess wore a red dress with a white lace neck.

What caught everyone's attention was that her post-delivery dress had a striking similarity with the dress her late mother-in-law Lady Diana wore when she introduced Prince Harry to the world back in 1984.

Royal déjà vu! ?? #KateMiddleton debuted her third child in an outfit that resembled the 1984 look #PrincessDiana wore to introduce the world to #PrinceHarry. |📷: Mark Cuthbert/UK Press /Getty; John Shelley/REX/Shutterstock

A post shared by People Magazine (@people) on Apr 23, 2018 at 12:30pm PDT

He's here! 💕 The newest member of the royal family was born April 23 at 11:01 BST — and proud parents #PrinceWilliam and #KateMiddleton took him home just 7 hours later! 👏

A post shared by People Magazine (@people) on Apr 23, 2018 at 11:38am PDT

On the arrival of their third baby boy, Prince William also brought his older children - son Prince George of Cambridge and daughter Princess Charlotte of Cambridge - to the hospital to meet their new brother.

Someone's excited to meet her new baby brother! ?? #PrincessCharlotte arrived at the hospital with #PrinceWilliam and #PrinceGeorge — and she gave the cutest little wave! 👋 |📷: David Fisher/REX/Shutterstock, Tim Rooke/REX/Shutterstock

A post shared by People Magazine (@people) on Apr 23, 2018 at 9:14am PDT

This is not the first time that Kate has paid tribute to Diana through her dress choices. Earlier, comparisons between Diana and the Duchess were also made when Kate delivered her first son George and introduced him to the world in a maternity blue and white polka dot dress. Kate's dress looked quite similar to what Diana wore while introducing Prince William.