How can I append a button to a TextField like in bootstrap input group?

I tried this, but it is too ugly:
<TextField fullWidth
variant="outlined"
label="Add Something"
InputProps={
{
endAdornment: (
<InputAdornment position="end">
<Button
aria-label="Add"
edge="end"
color="primary"
variant="contained"
>
ADD
</Button>
</InputAdornment>
)
}
}
/>