Geri Horner amazes fans as she shows off washboard tummy just TWO months after welcoming her second child

Geri Horner showed off her flat tummy [Geri Horner/ Instagram] But, Geri Horner is showing off no sign of a mum tum as she showed her super flat stomach in a recent Instagram video.  The singer uploaded a clip to her social media where she is seen vacillation from a tree in celebration of it being Friday.  The 44-year-ancient can be seen enjoying the sunny day when she decided to hang from a branch and wish her followers a pleased start to the weekend. While her …