But with little Dominic now six months old - and proud big sister Violet turning four this week - Rachael and husband Michael Miziner are already wondering whether they should have another child.
'That's the golden question for us,' smiles the tomboy turned TV star, who waltzed down the aisle with her handsome Dancing With The Stars partner in 2013.
'If we go again, number three will definitely be the final time...But the position we are in at the moment, we are blessed to have one of each. We're so content, this is the dream we always wanted.'
That said, life is a hectic quickstep at the Miziner family's light-filled inner Sydney apartment, which is also home to pet dog Simba.
The Instagram images may look glossy, but the reality can be very different.
'We're just like any other normal parents,' laughs down-to-earth Rachael, who somehow manages to be a wife, mum, model, presenter and business woman wrapped into one super-fit package.
'We're busy cleaning up poo and vomit a lot of the time! It's pretty full on.'
Currently, Rachael is also referee and co-host - with Ben Mingay and Tim Ross - of Channel 7's latest action-packed family show - a hilarious piece of water-based silliness called Cannonball.
As a former barefoot water-skier and all-round 'water-baby' she's in her element, crash-testing fast, splashy games - The Jump, The Slide, The Blob and Swing To Win - that anyone can play.
'It's not about how strong or athletic you are,' explains the funny and smart 29-year-old, who launched her only Body of Dance health and fitness program earlier this year, 'We've got everyone from country girls to computer nerds on Cannonball - and that's the beauty of it.'
For the full story, see this weeks issue of New Idea.
Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: 'Newtonsoft.Json.Linq.JValue' does not contain a definition for 'provider_name' at CallSite.Target(Closure , CallSite , Object ) at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0) at CallSite.Target(Closure , CallSite , Object ) at ASP._Page_app_plugins_pacembedly_pacembedly_cshtml.Execute() in c:\inetpub\wwwroot\site\App_plugins\PacEmbedly\PacEmbedly.cshtml:line 10 at System.Web.WebPages.WebPageBase.ExecutePageHierarchy() at System.Web.Mvc.WebViewPage.ExecutePageHierarchy() at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) at Umbraco.Core.Profiling.ProfilingView.Render(ViewContext viewContext, TextWriter writer) at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) at ASP._Page_Views_Partials_grid_editors_base_cshtml.Execute() in c:\inetpub\wwwroot\site\Views\Partials\Grid\Editors\Base.cshtml:line 20