Photo:Beyoncé Brings Blue Ivy On Stage In London

Already a seasoned traveler, Blue Ivy, now 15 months old, sweetly held hands with mom – who sparkled in a blue catsuit – as 20,000 fans looked on.

"I am very protective," Beyoncé told ABC News during the London leg of her tour. "I just want to make sure that [Blue Ivy] can have a healthy, safe, normal life. ... In the back of my mind, she's my priority. And life is completely different now."

She added, "I feel really, really just lucky that I can still do what I love, and now have a way bigger meaning. And that's to be her mother."

In fact, Blue Ivy may one day be a big sister, according to the singer. "I would like more children," she said. "I think my daughter needs some company."