Serena Williams mentioned on Twitter and Instagram that she is "tired" and that she needs a "mini Serena day," leaving many fans wondering if she is stressed out over boyfriend issues.

There were also rumors she may have crashed a friend's wedding wearing a leopard-pattern leotard to get the attention of rumored boyfriend and coach Patrick Mouratoglou.

Several weeks ago, she posted on Twitter that she spent her night in bed with no invite to Sasha Bajin's house for a "pre Williams invitation event."

Serena Williams has been active on Twitter posting about her entrepreneurial and athletic successes, but she seems to be avoiding mentioning her boyfriend Patrick Mouratoglou.

The Australian Open star has, however, posted about her rival Maria Sharapova.

She mentioned earlier on that she liked Maria Sharapova's outfit on Twitter.

"I'm loving Maria S Nike outfit. #approved #supercute," the Australian Open star wrote.

Two weeks ago, she posted messages saying she spend the weekend at Zales and was watching the Bridezillas television show on Twitter.

"Another weekend... Spent at Zales this time I brought Venus," she wrote in one piece.

"Is it weird that I'm watching bridezilla all day???"