Beyoncé Brings Blue Ivy Onstage During World Tour: Sings 'Irreplaceable' To Daughter [PHOTO]

Beyoncé brought her daughter Blue Ivy onstage with her during her “Mrs. Carter” world tour.

On May 4, while in London, the 31-year-old superstar grabbed her daughter’s hand and sang “Irreplaceable” to her.

The one-and-a-half year old wore protective headphones and a dress while her mom showed off her figure in a sparkling blue jumpsuit.

Beyoncé was last spotted with her daughter last month in Paris, alongside Jay-Z. The family grabbed lunch at Septime restaurant.

Meanwhile, as Beyoncé embarks on her world tour, the U.K.'s Daily Star claims to have a list of the 31-year-old’s requirements as she travels around the globe.

Beyoncé reportedly demands the following:

-All crew members have to wear 100% cotton.

-Alkaline water must be chilled to 21 degrees and served with $900 titanium straws.

-Bathrooms must have new toilet seats and red toilet paper at every venue.

-Hand-carved ice balls should be made after each show to cool her throat.

“Working so hard and with the toll the travel takes on her body in addition to the intense shows, she feels that her requests aren’t too much to ask for as she wants to ensure everything goes to plan,” a source told the publication.

While Beyoncé continues her tour, her husband Jay-Z has been busy promoting the upcoming film “The Great Gatsby.” The 43-year old serves as both an executive producer on the movie and its soundtrack. Beyoncé is on the soundtrack as well, and remakes Amy Winehouse’ hit song “Back to Black.”