When Amanda Bynes was at the height of her career, it seemed like she was positioned to be one of those rare former child stars who've succeeded in Hollywood as adults. Sadly for Bynes, however, she then went through a period of massive turmoil and has never quite come out of. After all, there are still reports about Bynes' family worrying about her and it has been reported that her net worth took a massive hit.

While the drama that has gone on in Bynes' relationship with her parents is the most concerning, there are other people that Amanda has fought with over the years. In fact, Bynes has garnered headlines for feuding with other stars several times.

6 Why Did Amanda Bynes Call Out Jay-Z, President Barack Obama, And Michelle Obama?

Barack Obama and Michelle Obama looking taken aback
President Barack Obama and the First Lady Michelle Obama
Via: Instar

Over the last few years, it has become exceedingly clear that some celebrities never should have gone on Twitter. Unfortunately For Amanda Bynes, it has been very obvious for a long time now that she is one of those stars.

Just like some other stars who've gotten into trouble on social media, it seems like Bynes often Tweets without putting too much thought into her posts first. Perhaps that is why Bynes has gotten into one-sided feuds that were pretty lame with three massively famous people.

Related: Amanda Bynes' Downward Spiral: Exploring Her Legal Troubles And Mental Health Battle

In one Twitter post, Bynes picked a fight with the much-beloved rapper Jay-Z completely out of nowhere. Alongside an image of the rapper wearing glasses, Bynes simply commented "Ugly face".

Similar to her post about Jay-Z, Bynes once used Twitter to call out President Barack Obama and First Lady Michelle Obama. In a random tweet, Bynes wrote "Barack Obama and Michelle Obama are ugly!"

5 Why Amanda Bynes Feuded With Lance Bass

Lance Bass looking uncomfortable
Lance Bass paparazzi photo
Via: Instar

Back when Amanda Bynes' acting career was still going strong, she starred in the movie Love Wrecked which was produced by Lance Bass. Due to his past relationship with Bynes, Bass was asked about her during a 2013 interview.

When asked about Bynes, Bass simply expressed his opinion that something was wrong. "It's one of those situations where obviously there's some mental problems there and she's not able to see that. We all are [able to see it],"

Not at all impressed with Bass, Bynes replied to him in a Tweet. "I ignored Lance Bass on Twitter and now he is saying I have a mental illness. Sorry you're an ugly ex boy band member w/ no talent or career. I haven't spoken to Lance Bass in 11 years. To say I have a mental illness out of nowhere makes me lash out! You're making me crazy!"

Bynes and Bass' feud seemingly came to an end when the former boy bander Tweeted that the Amanda he knew never would have called him out like that and she didn't respond.

4 What Happened Between Amanda Bynes And Chrissy Teigen?

Chrissy Teigen at the Golden Globes
Chrissy Teigen's infamous Golden Globes Reaction
Via: YouTube

Over the last several years, there has been a lot of coverage of Chrissy Teigen's conduct on social media with many people calling out the supermodel. The reason for that is just like Bynes, Teigen has feuded with a lot of people on social media. With that in mind, it seems like it was only a matter of time before Teigen and Bynes feuded with each other.

Related: These Were The Most Controversial Chrissy Teigen Tweets Ever

In 2013, Teigen and Bynes traded barbs with Chrissy getting things started with a Tweet. "The fact that Amanda Bynes has any 'support' to retweet is really unsettling...Support people with mental illness, yes. But don't condone/enable scary and poor behavior."

Unsurprisingly, Bynes responded to Teigen with a Tweet that focused on Chrissy's looks. "Ur not a pretty model compared to me. I signed to Ford models @ age 13. I don't look up to u beauty wise. I'm far prettier than u! I'm offended that you're saying I have a mental illness when I show no sign of it, but thankfully not one man that wants me wants you and you are an old ugly model compared to me!"

Bynes continued in another Tweet, "You look 45! You're not pretty so I'm not intimidated by you! I think you're jealous that you're just an ugly model whos career is uninspiring! I don't respect you! You're no beauty queen! I'm a beauty queen."

Not interested in keeping the drama going, Teigen Tweeted, "Nope. Not going to indulge. Wish the best for her, truly," Teigen also tried to make sure her followers didn't keep the feud with Bynes going. "Don't, guys. Just don't...I never ask anything of you guys but please. I don't need defending and please stop writing her. It's not funny, it's sad."

3 Why Amanda Bynes Feuded With Courtney Love

Courtney Love looking badass
Courtney Love at Paris Fashion Week
via: Instar

When Amanda Bynes found herself in legal trouble, the drama around her life garnered a lot of headlines. As is the case whenever there is news that people are talking about, many people decided to comment on the Bynes gossip on Twitter.

One of the people who commented on the Bynes situation at that time is Courtney Love. In a simple Tweet, the Hole singer and actor wrote "pull it together dude." at Bynes.

While Love's post seems rather benign, Bynes lashed out in response. "Courtney Love is the ugliest woman I've ever seen. To be mentioned by her at all makes me and all my friends laugh!"

Love later responded to Bynes during an Opie & Anthony interview where she called out how often Amanda used a single word. “Oh yeah, that thing…I think she likes the word ‘ugly’ a lot….it’s like, what’s that about?”

2 What Happened Between Amanda Bynes And Jenny McCarthy?

Jenny McCarthy looking ready to fight
Jenny McCarthy on the red carpet
Via: Instar

When the tabloids were going crazy with stories about Amanda Bynes being in legal trouble, one report claimed that police were at her New York City apartment. In response to those reports, Jenny McCarthy Tweeted and then later deleted "Police are at @AmandaBynes house. I hope they get her help. Enough of this circus. She needs help."

Bynes angrily responded to McCarthy on Twitter. "@JennyMcCarthy I need help? What are u talking about? Aren't u 50 years old? I'm 27, u look 80 compared to me! Why are you talking about me?"

Related: Amanda Bynes' 9 Year Conservatorship To End After #FreeBritney

Bynes added in a separate Tweet, "@JennyMcCarthy you're ugly! Police weren't at my house old lady! Shut the f--k up!"

Opting to take the high road, McCarthy responded to Bynes with an apology, "Sorry girl. Looking out for ya". In a surprising twist, Bynes accepted McCarthy's apology and offered one of her own. "Thanks! I'm sorry I offended you! You're beautiful! I was lying! I'll delete our tweets!"

1 Why Amanda Bynes Feuded With Rihanna

Rihanna looking strong willed
Rihanna on the red carpet
Via: Instar

Despite how nasty many of the feuds Amanda Bynes has gotten into were, her interaction with Rihanna was the harshest by far. With that in mind, it is all the more staggering that the feud seemingly started out of nowhere when Bynes randomly called Rihanna out in extremely harsh and personal Tweets.

First off, Bynes wrote, "@rihanna Chris Brown beat you because you're not pretty enough," From there, Bynes followed up with another mind-blowing Tweet. "@rihanna no one wants to be your lover so you call everyone and their mother that I almost named my new dog Rihanna."

Once Rihanna saw what Bynes wrote, she responded with a dismissive Tweet. "Ya see what happens when they cancel Intervention?"

Seemingly even more enraged, Bynes Tweeted at Rihanna again."@rihanna unlike ur fugly faced self I don't do drugs! U need the intervention dog! I met ur ugly face in person! U aren't pretty u know it!" Since Rihanna never responded to that Tweet, their feud stopped there.