Beyoncé baby reveal sets Twitter record

Beyoncé rubs her abdomen after performing at the 2011 MTV Video Music Awards in Los Angeles. Beyoncé and her husband, rapper Jay-Z, will be expecting their first child next spring. (Mario Anzuoni/Reuters)

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Beyoncé's pregnant performance at the MTV Video Music Awards sparked a Twitter record.
When Beyoncé performed at 10:35 p.m. ET Sunday night, there were 8,868 tweets per second. Twitter said that rate was a record for the service.
At the VMAs, Beyoncé revealed a baby bump, cupping her growing belly for photographers as she arrived and rubbing her tummy when she performed. The 29-year-old singer is married to Jay-Z.
The VMAs drew MTV's biggest audience since the network began measuring its viewership. Sunday night's show attracted 12.4 million viewers.
Beyoncé's baby announcement topped the previous Twitter record of 7,196 tweets per second, which was set in July after Japan beat the United States in the final of the women's World Cup.