Booble, which based the contest on its popular Booble fan-sign program - in which adult models place their boobs between the "B" and "ble" - said it is "privileged" to have Stylez's "awesome ‘OOs'" in its sign.
"Shyla is the perfect cover girl for us," said Booble founder Bob Smart, aka Booble Bob. "Shyla pulled away from the pack this month, with Sandee Westgate coming in second, followed by Vanilla Deville and Gianna."
Stylez has won the title before, having been named the Booble Girl of the Month for April 2007.
Stylez is in the running to be Booble Girl of the Year, which comes with a $5,000 grand prize. Also in the running this year are Sophie Dee, Vicky Vette, Sabrina Deep, Mariah Milano, Trina Michaels, Brandy Talore, Tera Patrick and Heidi Mayne.
The Booble Girl contest is open to models who are at least 18 years old and either have a website or cam show, appear on a website or cam site, or appear in at least one commercially released DVD. Models must use the fan sign provided by Booble.
Booble users select the monthly winners, who receive $500 and entry into the annual contest.