Blue Ivy, 14, towers over Beyoncé at Houston event

• Blue Ivy, 14, attended a Houston event with her mother Beyoncé and sister Rumi.
• The event was the opening of the Knowles-Rowland House youth center.
• Blue Ivy was noticeably taller than Beyoncé during the event.
• The event took place on a Tuesday.
• The Knowles-Rowland House is a youth center.