Pop star Beyoncé made it clear she was in support of same-sex marriage when she posted a handwritten note to her Facebook account.

She swapped out the words to her hit song “Single Ladies” and wrote:

“If you like it you should be able to put a ring on it,” and included the hashtag #We Will Unite 4 Marriage Equality!

More than 220,000 people liked the photo in less than 24 hours.

Beyoncé also posted a photo of the Human Rights Campaign's red equal sign logo on her Instagram account with the message, "It's about time #equality #prop8 #marriageislove . . . show your support!"

The logo itself is a variant of the HRC's bright yellow and blue logo. The organization changed its colors to red and pink, the colors of love, according to the Associated Press.

The “Bow Down” singer posted the two messages to social media on the same day the Supreme Court heard the first of two pending gay marriage cases. Tuesday’s case dealt with California’s Proposition 8 that bans same-sex marriage in the state. On Wednesday the court heard arguments on the constitutionality of the federal Defense of Marriage Act, signed by former President Bill Clinton, which defines marriage as being between a man and a woman.

When he was being interviewed by CNN, Beyoncé’s husband, Jay-Z, said he was in support of gay marriage last May when he was asked about President Obama’s endorsement of same-sex marriage.

"I've always thought it as something that was still holding the country back," he said. "What people do in their own homes is their business and you can choose to love whoever you love. That's their business. It's no different than discriminating against blacks. It's discrimination, plain and simple."

Many of Hollywood’s celebrities are showing their support for same-sex marriage by taking to social media.

"Today, the Supreme Court is hearing 1 of the most important cases in history," Kristen Bell tweeted. "Don't sleep on it. Equality matters." The pregnant "House of Lies" actress said she and fiancé Dax Shepard won't get married until gay marriage is legalized on the federal level, Us Weekly reported. Brad Pitt and Angelina Jolie have also made a similar statement, but might go back on their word considering how important their union would be to their children.

Madonna also posted a picture of a handwritten note:

"Marriage equality! Let's start a revolution."