(CNN)Celebrities sounded off as the U.S. Supreme Court hears oral arguments in a case that could decide whether gay and lesbian couples nationwide have the constitutional right to marry.
Celebs speak out in support of same-sex marriage
Photos: The many signs of #SCOTUS
Outside the Supreme Court of the United States, people hold signs calling for "equal justice under law."
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Photos: The many signs of #SCOTUS
A group against same-sex marriage prays in an "appeal to heaven" outside the Supreme Court.
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Photos: The many signs of #SCOTUS
Catherine Quinn of Detroit holds up her sign supporting same-sex marriage outside the Supreme Court.
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Photos: The many signs of #SCOTUS
Pastor Larry Hickam holds a sign of what he says is the definition of marriage outside the Supreme Court.
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Photos: The many signs of #SCOTUS
Kevin Rosseel of Washington stands outside the Supreme Court with his sign in support of same-sex marriage.
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Photos: The many signs of #SCOTUS
Stephanie Jones and Diana Iwanski of Clermont, Florida, share their sign in support of same-sex marriage outside the Supreme Court.
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Photos: The many signs of #SCOTUS
Sarah Rauber of Maryland stands in front of the Supreme Court.
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Photos: The many signs of #SCOTUS
McKenna Inskeep hands out stickers in support of marriage equality outside the Supreme Court.
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Photos: The many signs of #SCOTUS
Mike May of Cleveland argues against same-sex marriage in a debate outside the Supreme Court.
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Photos: The many signs of #SCOTUS
Outside the Supreme Court, John Lewis and Stuart Gaffney of San Francisco hold signs celebrating their marriage.
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Photos: The many signs of #SCOTUS
Senior Novice Sister Sedusa Poly Tishun shows off her face paint outside the Supreme Court. "We're here raising up our voices and our glitter in shouts of joy in support of marriage equality," Tishun said.
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Photos: The many signs of #SCOTUS
Andrew Damron of Brooklyn, New York, holds up a sign with the motto "You Only Live Once" in support of same-sex marriage.
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Photos: The many signs of #SCOTUS
Andrew Zibell of Brooklyn, New York, holds a sign in front of the Supreme Court that shows his support of same-sex marriage.
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Photos: The many signs of #SCOTUS
Senior Novice Sisters Ray Deeo Active and Allie Lewya show off their face paint in support of same-sex marriage.
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