The singers are celebrated in Working Mother magazine, in a list revealed to People Magazine, which also includes country singer Carrie Underwood, How To Get Away With Murder actress Viola Davis and Oscar-winner Cate Blanchett among others.

Beyonce, mother to daughter Blue, four, is celebrated for her savvy as a businesswoman; she earned an estimated $250 million (£172 million) in 2015, according to Forbes Magazine. She recently made a big splash in the athleisure market in partnership with Topshop, her latest venture, Ivy Park. And she's already grooming musical talent for stardom with her newest business: a music label arm of her company, Parkwood Entertainment, which will feature artists like the Bailey Twins, singer/rapper Ingrid, and Sophie Beem.

Meanwhile Adele, who returned to music after a three year hiatus, broke records with new release 25, the best-selling album of 2015, which has solely been credited with boosting global music business revenues for the first time in almost 20 years.

The mother to son Angelo, three, shared in a recent interview with Vogue magazine, that her son is the most fulfilling part of her life.

Working Mother's full list of its picks for the 50 Most Powerful Moms will be out later this week (ends08May16).