Beyonce thinks anyone should be able to put a ring on it
The 'Single Ladies' songstress is one of many celebrities expressing their stance on gay marriage, voicing her support by posting a handwritten note on her Facebook page.
"If you like it you should be able to put a ring on it" she wrote on a red background and posted online.
The pictures — a play on the lyrics of the 2008 hit when she sang "if you like it then you should have put a ring on it" — has garnered almost 115,000 likes and been shared by more than 33,000 fans.
The US Supreme Court has concluded the second of two hearings concerning gay marriage, as nine judges prepare to deliver a decision over California's Prop 8 ban on same-sex marriage, and a bid to overturn the Defence of Marriage Act, which defines marriage as 'between a man and a woman'.
Thousands of supporters have descended on the Supreme Court in Washington to show their support for gay marriage, outnumbering protestors, and many celebrities have voiced their support on social media.
"Today I'm thinking of the Supreme Court" tweeted Ellen Degeneres on Tuesday as hearings began.
"I hope they remember what makes our country great, and support equality for all."
Celebrities like Madonna and Kristen Bell have voiced their support on social media, and Facebook and Twitter users worldwide have changed their profile pictures to this:
America's Human Rights Campaign changed its well known blue and yellow logo to a red and pink version on Facebook, and it has since been shared more than 100,000 times.
"We never expected anything like this — for it to go viral," HRC spokesperson Charlie Joughin said.
"Red is a symbol for love, and that's what marriage is all about.
"We wanted to give people an opportunity to show their support for marriage equality in a public and visible way."
The Supreme Court has heard two cases calling for change in same-sex marriage laws, concluding hearings on Wednesday.
The mostly conservative leaning judges have dropped suggestions they are in no hurry to make changes allowing same-sex marriage, but supporters are hopeful for a positive outcome for equal rights, even though decisions on each case could take months.