Celebrities paid their respects to "Glee's" Naya Rivera, whose body was found in Piru Lake (open in new tab) in Southern California on Monday, July 13. Authorities said Rivera likely drowned while swimming in the lake with her 4-year-old son, Josie, and was found asleep on a pontoon boat they had rented.Rivera, who was 33, saved her son's life, Ventura County Sheriff Bill Ayub said at a press conference Monday. Ayub reportedly told CNN (opens in new tab), "She muscled enough energy to get her son back to the boat, but not enough to save herself."

Several of Rivera's "Glee" castmates shared their grief on social media Monday. Amber Riley wrote on Instagram, "My favorite duet partner. Love you. I miss you. No words right now, just so many feelings. Angel, rest in peace. [She was bold. She was ballsy. Darren Criss posted, "She was so much fun," adding, "I think she had more talent than we will ever see." I was always impressed by the way she cared for her family and her friends. (Rivera) radiated light and joy," he complimented, adding, "You shone on stage and screen and radiated love behind closed doors. I was fortunate to share so many laughs, martinis, and secrets with you. I can't believe I took for granted that you would always be here." You are so loved. You deserve the world and we will make sure Josie and your family feel it every day"

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"Her brilliance and humor were unmatched. Her beauty and talent were otherworldly. She spoke truth to power calmly and fearlessly," wrote Chris Colfer. 'She could turn a bad day into a great day with just one word. She inspired and uplifted people without effort. To be near her was a badge of honor and armor. Naya was truly one-of-a-kind and will continue to be so."

Alex Newell said, "Now more than ever we must lift her family and friends up, especially Josie. My heart goes out to them. Josie ...... You are truly loved by all who love you Mom. I love you Naya."

"My Naya, my Snix, my Bee. I really can't imagine this world without you," Kevin McHale wrote, revealing that he was in London with Rivera in 2013 when he heard the news of his co-star Cory Monteith's passing. 'She was the most talented person I ever knew. There was nothing she couldn't do, and I'm furious that I won't get to see more of her," he continued. Those of you who were fortunate enough to have known her will know that her most natural gift was being a mother. The way she loved her son was truly Naya at her most peaceful."

Jane Lynch tweeted, "Rest in peace, Naya. What strength you were. Love and peace to your family.

Demi Lovato tweeted, "RIP Naya Rivera, I will forever cherish playing your girlfriend on Glee. The character you played was groundbreaking for many closeted (at the time) queer girls like me, and your ambition and accomplishments have inspired Latina women everywhere."

Nene Leakes said, "I was praying for a miracle. I wanted her to come home to her baby. This hurts. I hold the memories close to my heart and remember the good times, the laughter, the way we cut up on the set. It was a fun time. Please pray for Naya's family."

Josh Sussman tweeted, "Naya, I will miss you so much."

Taj Mowry, who was dating Rivera, wrote on Instagram last week, "My sweet Naya, to say I am devastated would be an understatement. This is a nightmare. Every day gets harder." We grew up together. We grew up together. We experienced many firsts together. Love, intimacy, and heartbreak. Always have been and always will be."

Tahi's siblings, Tia and Tamera Mowry, also shared a tribute to Rivera on Instagram." My Naya." Tia wrote. 'I became a part of your world through my brother @tahj_mowry. You guys used to audition and book jobs together. I have known your beautiful spirit since I was 6 years old. Tia continued. Your smile is always the most beautiful smile. Take a good rest. You are a beautiful angel now."

"My sweet Naya. I love you. I will always love you," Tamera posted. 'I will never forget your sweet smile, your amazing voice, and the warmth and love that always greeted me. I knew from the time I was 9 years old that you had so much talent and beauty to give us all, and I am so grateful to have had you in my life for over 20 years. You took my breath away.

Viola Davis posted, "Praying for Naya Rivera's family...Please "Do Over" in 2020. The loss is too great.

"Fleetwood Mac's Songbird is one of my favorite songs of all time, thanks to the Glee soundtrack version. 'Naya Rivera, rest in peace. Covered by God and embraced by her loved ones."

"Rest in Heaven," Dwayne Wade tweeted.

"RIP sweet naya," Ashley Benson tweeted.

Ricky Martin tweeted, "Beautiful memories Boricua, RIP."

Aisha Hines tweeted, "Approaching numbness. Fighting to feel hope every day," she tweeted. This year has been deeply confusing and destructive. I am crushed by this news. My whole being cries out in prayer for her 4 year old. Mercy."

"This is absolutely heartbreaking," Mandy Moore posted." Sending love and holding space for her son and loved ones."

"Rest in peace.

"Rest In Heaven, Naya Rivera. Sending lots of prayers, love and courage to her family," Holly Robinson Peet tweeted.

Becky G. tweeted, "Beautiful Naya Rivera, rest in peace. My thoughts and prayers are with your loved ones. You will be missed and never forgotten."

"This is an absolute nightmare," Bebe Rexha wrote. 'I had the pleasure of having dinner with her after we recorded together, and she was a wonderful person. My heart goes out to her family and friends. I hope to see them in heaven. Rest in peace Naya Rivera.