  We predicted, observed, and analyzed the multichord stellar occultation of
the Second Gaia Data Release (Gaia DR2) source 3449076721168026624 (m$_v$ =
14.1 mag) by the plutino object 2003 VS$_2$ (hereafter, VS$_2$) on 2019 October
22. We also carried out photometric observations to derive the rotational light
curve amplitude and rotational phase of VS$_2$ during the stellar occultation.
Combining the results and assuming a triaxial shape, we derived the 3D shape of
VS$_2$.
  Out of the 39 observatories involved in the observational campaign, 12 sites
reported a positive detection; this makes it one of the best observed stellar
occultations by a TNO so far. We obtained a rotational light curve amplitude of
${\Delta}$m = 0.264 $\pm$ 0.017 mag, a mean area-equivalent diameter of
D$_{A_{eq}}$ = 545 $\pm$ 13 km, and a geometric albedo of 0.134 $\pm$ 0.010.
The best triaxial shape obtained for VS$_2$ has semiaxes a = 339 $\pm$ 5 km, b
= 235 $\pm$ 6 km, and c = 226 $\pm$ 8 km. The derived aspect angle is
${\theta}$ = 59${\deg} \pm$ 2${\deg}$ or its supplementary ${\theta}$ =
121${\deg} \pm$ 2${\deg}$, depending on the north-pole position. The
spherical-volume equivalent diameter is D$_{V_{eq}}$ = 524 $\pm$ 7 km. If we
consider large albedo patches on its surface, the semi-major axis of the
ellipsoid could be ~10 km smaller. These results are compatible with the
previous ones determined from the single-chord 2013 and four-chord 2014 stellar
occultations and with the effective diameter and albedo derived from Herschel
and Spitzer data. They provide evidence that VS$_2$'s 3D shape is not
compatible with a homogeneous triaxial body in hydrostatic equilibrium, but it
might be a differentiated body and/or might be sustaining some stress. No
secondary features related to rings or material orbiting around VS$_2$ were
detected.
