Royal baby craze has reached new heights with fans, reporters and photographers from several countries camping outside the Lindo Wing of St. Mary's Hospital to hear the news of Kate Middleton's delivery despite uncertain due date.

A royal supporter adjusts Union flags outside the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London

The royal family is tight-lipped on Kate Middleton's due date and the speculated 13 July delivery date has passed but that has not stopped fans and media from waiting in front of the Lindo Wing of St. Mary's Hospital where the Duchess of Cambridge is expected to give birth to her first child, who will be third-in-line to the throne.

Going a step ahead, The Sun is live streaming the vicinity of the hospital with a camera fixed on the front door of the Lindo Wing. The monitor will capture all the comings and goings into and out of the Lindo Wing where Duchess of Cambridge Kate, 31, is to give birth, reported the daily.

Like the fans and media personnel, Britain's royal family members too are eagerly waiting by the phone for Prince William and Kate Middleton to call them and announce the birth of their first child. Camilla, wife of Prince Charles, created more frenzy by telling reporters on Tuesday that the new member of the royal family would hopefully arrive by the end of the week.

Earlier reports put have Kate's due date on 13 July but it has already passed. The Daily Mail had reported that Kate and William's closest pals were overheard discussing at a party that the royal baby is due to be born on 13 July.

Creating more hype, Kate's mom Carole Middleton reportedly told her friends that the much-awaited royal baby would be a Leo, suggesting that the baby would not arrive until at least 23 July, according to a report by NBC.

The hype around the birth of the royal baby has been overwhelming, and the report by Centre for Retail Research (CRR) has claimed that it would boost British economy. The report said that the birth of Prince William and Kate's first child may boost retail sales by around £243 million (approximately $376) between 1 July and 31 August, 2013. A total of £87 million is expected to be spent on festivities, £80 million on souvenirs and toys, and £76 million on books, DVDs and media.

News presenter Natalie Morales, of NBC Today, knits baby booties in the media pen opposite the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London
Royal fans sit outside St Mary's Hospital in anticipation of the birth of the Duchess of Cambridge's first baby in London
The media pen is seen opposite the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London
A member of the U.S. media decides which baby clothes to show to the camera outside the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London
A correspondent speaks outside the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London
The media pen is seen opposite the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London
Royalist Magraret Tyler is escorted away after posing for a photograph in front of the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London
The press pen is seen opposite the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London
A royal supporter looks out from a tent outside the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London
Natalie Morales, a news anchor on NBC's Today show, prepares for a live broadcast opposite the Lindo Wing of St Mary's Hospital, where Catherine, Duchess of Cambridge, is due to give birth, in central London
The media pen is seen opposite the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London
The press pen is seen opposite the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London
A woman wearing a betting shop odds board, printed with Royal Baby names, walks past the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London
Clocks are seen in the media pen opposite the Lindo Wing of St Mary's Hospital, where Britain's Catherine, Duchess of Cambridge is due to give birth, in London