By Zoe Delaney Stacey Solomon has shut down speculation she’s planning on welcoming a sixth child into the world with a hilarious eight-word statement. The former X Factor finalist, 34, and husband Joe Swash have a big, blended family featuring a whopping six children between them, with Stacey giving birth to her youngest last year. Stacey has a 15-year-old son named Zachary who she shares with ex-boyfriend Dean Cox, and an 11-year-old son named Leighton who she shares with ex-fiancé Aaron Barnham. Together with former EastEnders actor Joe, she is also the mother of four-year-old son Rex, two-…