The 38-year-old singer, took her mother to see a musical in London's west end with Henry's tycoon parents Sir John and Lady Beckwith.
"She was nervous but thought it would break the ice for them to see a show. They all had a great time and Geri was giddy with excitement," thesun.co.uk quoted a source as saying.
Halliwell who has dated 31-year-old Henry for 21 months, arranged for them to meet the cast of the musical, which is about 1960s band "The Four Seasons".
