Celebs including Lady Gaga and Laila Ali, the daughter of boxing legend Muhammad Ali, ripped Ronda Rousey following her epic defeat this past weekend -- get the scoop. Credit: Jeff Bottari/Zuffa LLC/Zuffa LLC via Getty Images

The not-so-sweet sound of defeat. Following her epic loss to Holly Holm this past weekend, UFC female boxer Ronda Rousey found herself on the receiving end of criticism from numerous celebrities, including Laila Ali, 50 Cent, Donald Trump, and Lady Gaga.

Rousey, 28, who was undefeated up until Saturday, Nov. 14, was knocked out in the second round by Holm at UFC 193. The moment was astounding, especially since Rousey made so many threats against Holm, 34, prior to their fight. "Fake ass cheap shotting fake respect fake humility bitch," Rousey wrote on Instagram prior to her UFC battle with Holm. "'Preacher's daughter' my ass - I see through your fake sweet act now - you're getting your ass kicked tomorrow, and I'm really going to enjoy the beating I give you #andSTILL."

Laila Ali, the daughter of boxing great Muhammad Ali and a retired, undefeated champion herself, reacted to Rousey's loss in an interview with TMZ Sports. "In order to be the best in the world, you definitely don't ever get beat up like that in your prime, period," Ali, 37, told the site.

Boxing enthusiast 50 Cent, who is close friends with Floyd Mayweather, posted a photo of Rousey after she was knocked out by Holm. "LMAO FLOYD TOLD ME TO POST THIS," the "In da Club" rapper wrote. "He want me to do the dirty work.😂 #EFFENVODKA #FRIGO #SMSAUDIO

Outspoken Republican presidential hopeful Trump also had an opinion about Rousey's loss. "Glad to see that @RondaRousey lost her championship fight last night. Was soundly beaten - not a nice person!" Trump wrote.

NFL favorite JJ Watt was more diplomatic in his congratulatory tweet to Holm. "Wow," the football player wrote. "Well, I was obviously wrong. Incredible fight by Holly Holm. Hats off to her and her team."

Oddly, Gaga also had some comments about Rousey's loss, which she shared via Instagram on Sunday. The pop superstar-turned-American Horror Story actress posted a pic of Holm slugging Rousey in the face. "That's what you get for not touching gloves!" she captioned the pic.

Following her defeat, Rousey shared a message with her 6.5 million Instagram followers. "I just wanted to thank everyone for the love and support," she wrote late Sunday night. "I appreciate the concerns about my health, but I'm fine. As I had mentioned before, I'm going to take a little bit of time, but I'll be back."

Can't get enough of Us? Sign up now for the Us Weekly newsletter packed with the latest celeb news, hot pics, and more!