Rochelle Humes has a bun in the oven!

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The 23-year-old singer -- one-fifth of the British girl group The Saturdays -- married JLS singer Marvin Humes on July 27 after a two-year courtship. "This year has been full of incredible moments, including getting married, but finding out I was pregnant was by far the best moment of all," the pop star tells E! News.

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Humes will be the second band member to become a mother, as Una Healy welcomed daughter Aoife Belle on March 13. (The other Saturdays singers are Mollie King, Frankie Sandford and Vanessa White.)

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The band will be featured in a new E! reality series, Chasing The Saturdays, premiering Sunday, Jan. 20, 2013 at 10 p.m. EST.

This article originally appeared on The Saturdays' Rochelle Humes Is Pregnant!