diff --git a/internal/cmd/shell/shell.go b/internal/cmd/shell/shell.go
index 7293a908..e7d27ffa 100644
--- a/internal/cmd/shell/shell.go
+++ b/internal/cmd/shell/shell.go
@@ -172,8 +172,9 @@ second argument:
 				"-P", port,
 			}
 
+			styledBranch := formatMySQLBranch(database, branch)
 			m := &mysql{}
-			err = m.Run(ctx, mysqlArgs...)
+			err = m.Run(ctx, styledBranch, mysqlArgs...)
 			return err
 
 		},
@@ -189,6 +190,16 @@ second argument:
 	return cmd
 }
 
+func formatMySQLBranch(database, branch string) string {
+	branchStyled := printer.BoldBlue(branch)
+	if branch == "main" {
+		branchStyled = printer.BoldRed(branch)
+	}
+
+	return printer.Bold(fmt.Sprintf("%s/%s> ", database, branchStyled))
+
+}
+
 // createLoginFile creates a temporary file to store the username and password, so we don't have to
 // pass them as `mysql` command-line arguments.
 func createLoginFile(username, password string) (string, error) {
@@ -210,12 +221,15 @@ type mysql struct {
 }
 
 // Run runs the `mysql` client with the given arguments.
-func (m *mysql) Run(ctx context.Context, args ...string) error {
+func (m *mysql) Run(ctx context.Context, styledBranch string, args ...string) error {
 	c := exec.CommandContext(ctx, "mysql", args...)
 	if m.Dir != "" {
 		c.Dir = m.Dir
 	}
 
+	c.Env = append(os.Environ(),
+		fmt.Sprintf("MYSQL_PS1=%s", styledBranch))
+
 	c.Stdout = os.Stdout
 	c.Stderr = os.Stderr
 	c.Stdin = os.Stdin
diff --git a/internal/printer/printer.go b/internal/printer/printer.go
index 28794ab2..0bd9a554 100644
--- a/internal/printer/printer.go
+++ b/internal/printer/printer.go
@@ -229,6 +229,11 @@ func BoldBlue(msg string) string {
 	return color.New(color.FgBlue).Add(color.Bold).Sprint(msg)
 }
 
+// BoldRed returns a string formatted with red and bold.
+func BoldRed(msg string) string {
+	return color.New(color.FgRed).Add(color.Bold).Sprint(msg)
+}
+
 // Bold returns a string formatted with bold.
 func Bold(msg string) string {
 	// the 'color' package already handles IsTTY gracefully