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Since last year, there have been rumors that Beyonce might be expecting her second child with Jay-Z. Now, more speculations about the singer circulated online after she was seen attending rehearsals for her Super Bowl performance at the University of California over the weekend.

In a video released by the Daily Mail, the singer is seen wearing an oversized green coat with a hood as she made her way past screaming fans into a waiting vehicle. According to an E! News source, the "End of Time" singer was said to be at the McKay Athletic Center practicing for the upcoming Super Bowl half-time show with her dancers.

"Her dancers were dancing and rehearsing," the insider said. "They blocked everything down and the windows so nobody could see." The source adds that about 300 people were outside hoping to get a glimpse of the singer, who left through the back door.

The rumors following her rehearsal at the campus come after speculations earlier this month that she may be expecting as she was also seen wearing an oversized jacket while attending several Golden Globes afterparties with Jay-Z.

An insider told Hollywoodlife that the 34-year old is giving every indication that she is pregnant.

"In recent months she has bulked up her security team to keep her protected," said the source. "It really is quite an intimidating sight to see, something is going on with her for sure."

In recent weeks, Beyonce has been photographed on different occasions wearing oversized garb. Earlier this month at her daughter Blue Ivy's 4th birthday party, she was also spotted wearing an oversized sweatshirt, and media outlets immediately pointed out that her midsection appears to be fuller and that she might be expecting a baby. It was also reported that she is allegedly already four months along in her pregnancy.

Reps for Beyonce have yet to make a comment on the pregnancy rumors.