April 04, 2016 08:15 PM

Double the love!

Sally Wood, who is expecting twin girls in June with her rock star husband Ronnie Wood, showed off her growing baby bump at a new Rolling Stones exhibition in London on Monday night.

The 37-year-old dazzled in a knee-length, black lace number, pairing the dress with nude heels, wavy hair and berry colored lip.

David M. Benett/Getty

PEOPLE confirmed the couple’s pregnancy news in December, when a rep for Wood, 68, revealed that he and Sally would welcome twins this summer.

“Needless to say they are thrilled and overjoyed with the wonderful news,” the rep told PEOPLE.

The rocker, who authored the book How Can It Be? A Rock & Roll Diary, already has four grown children — Jamie, 41, Jesse, 39, Leah, 37, and Tyrone, 32 — from his previous marriage. He also has 10 grandchildren.

— Naja Rayne

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