Naomi WattsNaomi WattsIf we were pregnant, we'd use every excuse to kick back and eat chocolate.

But not Naomi Watts.

She's a more athletic model of with-child lady.

The stunning actress outed her beaut bump in all its growing glory on a cycling trip in the Hamptons recently.

Naomi, 39, is expecting her second child with Liev Schreiber early next year.

And bearing in mind she already a one-year-old son, Alexander, to look after, we're surprised she has the energy to leave the house - let alone get flexing with some wheely action.

But she's clearly not one to rest on her laurels, or watch bad daytime TV - as we might do with a baby on the way.

Nope, she's embracing life to the full - and we're glad, since it gives us a chance to ogle at her growing bump.

Naomi only announced her pregnancy in July, but already a shapely bubba curve is in clear prominence.

And we've no doubt she'll be a yummy mummy supreme once it's popped - especially if she keeps this kinda exercise up.

Come see other celebs flaunt their bumps, in our gallery of preggers stars on the beach below.