No birth time from Lisa has ever been made public, so there is no confirmed answer to the question. What is on record is the date and place: 27 March 1997, in Buriram Province, Thailand. That alone fixes an Aries Sun and a Scorpio Moon, with Venus, Mercury and Saturn joining the Sun in Aries.
The one birth time linked to Lisa online is 12:45 PM, and it traces back to a YouTube Short that has since been taken down. The video never said where the time came from, and with it gone there's no way to follow it to a birth record or to anything Lisa said. Astrotheme lists the time, but only with a C rating. Plenty of fans passed it on in good faith, and it may even turn out to be right. Until Lisa or the family confirms it, though, it stays unverified, and the chart here leaves it out.
Four planets sat in Aries on 27 March 1997, and that holds at every hour of the day. The Sun is at 6° Aries with Venus less than two degrees away, so warmth and charm come out in the same direct, fearless way as the core self. Mercury in Aries thinks fast and speaks plainly. Saturn in Aries adds the discipline to keep starting new things and to see them through. Aries is the sign of courage and first moves, so this is a chart built for going first.
Both the Sun and Venus make easy trines to Pluto, each within about a degree, which gives all that energy depth and lasting power. The Sun also makes a friendly sextile to Uranus, a taste for the new and the unexpected.
The Moon spent the whole day in Scorpio, moving from about 4° to 16°. A Scorpio Moon feels things fully and keeps its loyalties for life, with a focus that doesn't waver once something truly matters.
A confirmed birth time would add the two things a date can't give: the rising sign and the houses. The rising sign is whichever sign was coming up on the eastern horizon at the moment of birth, and it changes roughly every two hours. It colours first impressions and sets out the twelve houses, which place each planet in an area of life. If the 12:45 PM time were ever confirmed, it would put the rising sign in Cancer, at about 18°, with the Midheaven, the top of the chart, in Aries. Treat that as a possibility only: a different hour would change the picture completely, which is exactly why a time with a source matters.