The One Show host, 48, who also shares sons Teddy, six, Kit, four, with husband Charlie Thomson, took to her Instagram Stories with a snap from the hopsital.
The host of the hit BBC chat show found herself welling up during last night's episode (pictured), an hour-long special in honour of the 80th anniversary of VE Day on Thursday.
Show presenter Alex, 48, joined her co-host Roman Kemp, 32, took to the famous red couch with celebrity guests Elaine Paige, Giovanna Fletcher and Amanda Holden.
The JLS star, 38, who was presenting the show on Thursday alongside Alex Jones, excitedly previewed Friday's line-up, with JB buzzing with anticipation over meeting a celebrated personality.