Geri Horner is currently enjoying a beach break to celebrate her 50th birthday, and on Tuesday, the pop icon treated her fans to a new update.INSIDE: Geri and Christian Horner's epic homes unveiled as £440m fortune announcedTaking to Instagram, the flame-haired songstress shared a sun-kissed snap of herself on the shoreline alongside her five-year-old son, Monty. The mother-son duo appeared in high spirits as they showed off their royal blue boogie board.WATCH: Geri Horner celebrates England's win alongside daughter BluebellPrepped for the chilly sea, both Geri and Monty donned wetsuits and protective water shoes.