By peoplestaff225
Updated February 03, 2010 08:00 AM

Courtesy ELLE UK

Although they are famous for careers in acting and fashion design, respectively, Liv Tyler says that she and pal Stella McCartney are just like any other moms when it comes to girl talk.

In the March issue of ELLE UK, Liv, 32, reveals,

Mom to 5-year-old Milo William, Liv says that her son is responsible for her svelte form — indirectly, at least! “Jumping on a bouncy castle has got to be the best exercise,” she notes.

Milo has also proven to be the motivating force behind his full-time city dweller mom’s contemplation of a quieter life in the countryside. Explains Liv,

Milo is Liv’s only child with ex-husband Royston Langdon.

Source: ELLE UK, March issue